When Spying Goes Terribly Wrong

“Prongs! Where are you going?” Sirius called out.

James froze in his tracks and looked like a deer caught in headlights.

“Uh– Gonna go get a snack from the kitchens! See ya later!” And before anyone could say anything else, he rushed out of the common room without a single glance back.

“Wait – bring me back some treacle tarts!” Peter exclaimed just as the portrait door swung shut.

Sirius frowned and stared at the spot where James had just been. He stared for a good five minutes and would’ve continued staring if Remus hadn’t shook his shoulder.

“Padfoot?”

Sirius glanced at Remus, a frown still on his face. “What do you think he’s hiding?” he blurted out.

Remus sighed. “We’ve already discussed this, Pads – it’s none of our business.”

“Of course it’s our business!” Sirius said indignantly. “Our dear Prongs has always been as transparent as a fucking ghost, we know all of his dreams, all of his goals in life, all of his embarrassing childhood tales, all of his deep dark secrets – so why is he suddenly being so damn secretive?! Clearly something’s wrong, and we gotta get to the bottom of it if we want to help him.”

“Or maybe nothing’s wrong and you’re just reading too much into this,” Remus said pointedly.

Sirius scoffed. “No way you believe that, Moony. C’mon, you gotta admit there’s something going on. He’s always sneaking off and taking the map and cloak so we can’t follow him! And he’s always looking suspicious as fuck! You can’t tell me you aren’t even a little curious?”

Remus bit his lip and looked sheepish. “Well sometimes I do wonder about it…”

“See! So, why don’t we come up with a plan to find out what’s going on.”

“But–”

“What do you have in mind?” Peter immediately perked up, giving his full attention to the alpha. Sirius grinned and proceeded to take a book out of his bag. Remus raised an eyebrow at him. Clearly he came prepared.

“I found this in the restricted section and it’s perfect for the plan!” Sirius opened it to a specific page and showed them.

It detailed a way of becoming someone else’s animagus temporarily. Apparently one had to make a potion, very similar to polyjuice, and then pluck the hair of the chosen person in both human form and their animagus form and add it to the potion before drinking it and being that person’s animagus for a few hours.

“We’d obviously turn into Peter’s animagus since he’s a rat and that’s the easiest way of following James around,” Sirius said excitedly.

Peter squeaked in surprise while Remus frowned at the text. “Siri… I don’t know about this. The potion is very complicated to make and what if James somehow figures it out?”

“He won’t!” Sirius insisted. He then gave Remus a meaningful look – which made the omega blush – and said in a loving tone, “Besides, you’re very good at making potions, definitely better than me and Pete, so I know it’ll work.”

Remus sighed. Sirius knew damn well that complimenting the omega and looking at him like that made him flustered and easily succumb to his will. And sure enough, Remus found himself relenting. “Fine… but this is going to take a while to finish.”

Sirius grinned brightly. “I’ll help you! Well, as much as I can anyway since I’m rubbish at potions.”

“What do I do?” Peter asked warily.

“Just sit there and wait until we have to yank some hair out of you.”

Peter squeaked indignantly again as the alpha and omega pair went up to their dorms to start working on the potion.

The potion turned out being harder to make than they thought, so it wasn’t until a few days later when it was finally ready.

Sirius had just wrestled Peter for strands of his hair. The beta had shrieked while in his rat form when Sirius harshly yanked some fur off of him, so he tried escaping before they could yank more hair. But Sirius, being a strong and alert alpha, easily caught him, forced him back to his human self, manhandled him onto the couch, and yanked hair out of the boy’s scalp.

“So dramatic,” Sirius chided, as if he wasn’t just as dramatic. Peter merely wailed as he rubbed his sore scalp.

“So how long does this last again?” Sirius asked, looking at the oozing green potion in mild disgust.

“About three hours at most, so we should try finding James quickly,” Remus said. He gathered two thin vials and carefully poured equal amounts of the potion into them. His eyebrows furrowed and his lips pursed as he did so.

“You’re so cute when you concentrate,” Sirius chuckled. Remus’ face turned bright red and he shoved one of the vials into the alpha’s hands.

“But don’t say such things while I’m concentrating,” Remus mumbled, a slight pout on his lips.

Sirius couldn’t help but chuckle again, finding his omega adorable as always. “Scratch that, you’re cute all the time.”

Remus shook his head bashfully before downing the potion. Sirius smirked and followed his lead. The thick potion hit his tongue and tasted rancid, making Sirius want to throw up. He grimaced but finished the entire vial anyways.

“That was the nastiest shit I’ve ever had to drink,” he groaned, wiping at his mouth and placing the vial back onto the table. But before he could do anything else, he suddenly felt dizzy and the world seemed to slowly grow bigger. He blinked a few times, disoriented, as he finally looked at his surroundings.

Well… guess this was how rats saw the world around them. Sirius glanced beside him and holy shit, there were two rats staring back at him at eye level.

“Fuck you nearly gave me a heart attack!” he tried shouting, but all that came out were frantic squeaks. Remus and Peter, now both rats as well, seemed to understand him though.

“Sirius, remember that we don’t have much time,” Remus squeaked back and weirdly, Sirius could somehow understand him as well. This whole situation was fucking weird honestly.

And so, the three rats scurried out of the dorm and made their way into the common room. Luckily, James was just standing up and getting ready to leave. They chose this time precisely because James almost always sneaks off, and today was no different.

The rats quickly followed their friend but made sure to always stay hidden in the shadows. James seemed entirely too distracted to even notice anything anyways.

“He’s not wearing his cloak,” Peter squeaked.

Sirius noticed that too. James was only glancing at the map every now and then, but he wasn’t wearing his cloak like they assumed he would. That made it easier to follow him but it was definitely unexpected.

Eventually, James came to a stop in front of a blank wall – the room of requirements. Sirius grew even more curious now, wondering what the hell his best friend would even need the room of requirement for. The alpha paced back and forth until a door finally appeared. The three rats quickly followed him inside and were quite surprised to see an ordinary room. Sirius was half expecting to see something absurd, what with the way James kept anxiously glancing around.

The room had a very cozy and warm atmosphere to it. There was a crackling fireplace nearby, and a big soft couch in the middle of the room. Further back behind the couch, there was also a bed stacked with fluffy blankets, and the floor was covered in a very fluffy carpet that nuzzled into Sirius’ bare paws.

“So this is Prongs’ big secret?!” Sirius squeaked incredulously. Now he felt kinda stupid and disappointed for going through all this trouble just to find James lounging in a regular fucking room. What, was he just embarrassed to tell them he likes soft, fluffy things? Pathetic. Alphas need to stop being so toxic and just admit when they like things like this. Sirius has proudly admitted to liking to cuddle into soft blankets, especially in his dear Moony’s nest, where everything was just so soft and perfect like the omega himself. Damn, now Sirius just wanted to go back to the dorms and cuddle with his omega in his nest.

But before Sirius could turn to Remus to tell him just that, the door suddenly opened again. Sirius looked in that direction but there was nobody there. Footsteps could be heard though, until finally the person revealed themself.

Sirius vaguely realized that the person had James’ cloak, but that was not what he was focused on. No, he was far too busy gaping at his little brother.

What the fuck?! What was Regulus even doing in here?! Sirius blinked several times, contemplating if the potion was botched and making him see things. But Regulus was very much there, and– wait was he smiling?!

“Hey,” James said softly, his eyes full of what could only be fondness. “You got here alright?”

“Of course, this cloak of yours is very useful,” Regulus said, folding it neatly and placing it on the coffee table.

“Anything that’s mine is also yours,” James said, a big sappy grin on his face.

Regulus snorted. “And also Sirius’. My dumb brother can’t grasp the concept of personal space and belongings.”

That’s not true! Sirius thought indignantly.

“Speaking of which,” James groaned and ran a hand through his messy hair, “I think he and the others suspect there’s something going on with me.”

“Sirius being observant? I don’t believe you,” Regulus clicked his tongue, making Sirius feel even more indignant. “But I guess it makes sense that it didn’t take Lupin that long to notice…”

James sighed before smiling at Regulus once more. “But enough about them, I’m here to focus on you,” his voice got lower at the last part, and Sirius could see his brother visibly tremble at that. What the fuck?

James slowly approached the omega, and it honestly resembled a predator stalking its prey. Sirius bristled and felt the hair on his back stand up. If James was going to hurt his brother, then Sirius would have to interfere in some way.

But to his horror, James did something much, much worse.

James gripped Regulus’ hips and pulled him close to his own body. He crashed his lips into the omega’s and in an instant, they were tangled up in each other, practically sucking each other’s faces off.

If rats could visibly get pale, Sirius would be as white as a fucking ghost. He felt all the blood drain out of his face as he stared in utter shock at the scene before him.

“Holy shit, holy shit–” Peter was squealing loudly from behind Sirius, and Remus let out a surprised squeak. But all Sirius could do was stare in complete shock and horror.

But then James groped his little brother’s ass and Sirius finally snapped out of his shock.

“Who does this bastard think he is?!” he hissed furiously, beginning to scamper towards them but he then suddenly felt a stinging pain in his tail. He glanced behind him and saw Remus biting his tail (definitely not something he ever thought he’d say).

“You're going to blow our cover!” the omega reminded him but Sirius huffed indignantly.

“That’s literally my baby brother he’s molesting!”

“Now now Sirius, I wouldn’t use that word, Regulus is very much reciprocating–”

“Moony! How could you say that about Reggie?!”

A loud gasp suddenly rang out into the air. Sirius whipped his eyes back towards the pair and felt his heart drop further. In the few seconds when he and Remus were arguing, James and Regulus had already moved onto the couch. James – that horny bastard – was on top of Regulus, one hand gripping the omega’s slender wrists over his head and the other inching its way down Regulus’ body.

“JAMES! Get your slimy fucking hands off of my brother!” Sirius erupted into a fit of enraged squeals, his tiny body shaking furiously. He made his way towards them and without another thought, leaped onto the couch. The small, squealing rat bit down hard into James’ arm.

“Ah fuck!” James exclaimed, looking at the rat in a mix of bewilderment and disgust. Regulus glanced at it too and immediately scrunched his nose.

“That’s disgusting. Why is there a rat in here? It’s the room of requirements, not some old broom closet.”

James suddenly chuckled. “Remember what we found in that one broom closet–”

“I am never letting you drag me off to another broom closet ever again,” Regulus hissed, face turning red.

That only enraged Sirius further. A fucking broom closet?! How long has this been going on?! Thus, he bit James again, even harder this time.

“Ow– stupid rat!” The alpha tried shaking the rat off of him but Sirius held on like a leech.

Regulus grimaced before muttering a spell under his breath. Sirius suddenly felt the wind knock out of his lungs as he was tugged backwards. He fell onto the carpet with a dull thud. He tried getting back onto the couch but abruptly realized he couldn’t move at all.

Oh fuck…

James immediately went back to what he was doing, burying his face into the omega’s neck and leaving hickeys on every inch of his skin. Regulus let out breathy little moans, his hands gripping onto James’ shoulders and his legs wrapping around his waist.

And Sirius couldn’t do a damn thing. He couldn’t even look away – he was helplessly frozen. Merlin’s balls– what kind of torture is this?!

“A-Alpha– please!” Regulus whined loudly, arching his back and exposing his neck even more. James growled possessively, placing a bite dangerously close to Regulus’ mating gland.

James you dirty brotherfucker– I swear if you mate my brother I’m gonna cut you into pieces and feed you to the giant squid– Sirius cursed internally.

The overpowering and aroused alpha pheromones drenched the air, with a sickeningly sweet omega scent mixing in with it. If Sirius could, he’d be gagging by now.

The couple continued their foreplay for what felt like an agonizingly long time, but Sirius was naively hoping that that was all they’d do (he was wrong of course).

James slowly started stripping Regulus of his clothes. Sirius grew more and more horrified as he realized Regulus was wearing lace lingerie underneath his robes.

…

Sirius wanted to gouge his own eyes out. Nobody should ever be subjected to seeing their own sibling wearing something like that!

James growled in delight. “Baby, you look so damn gorgeous. I love it when you dress up for me like this. My beautiful omega.”

“Yes alpha, I’m yours!” Regulus gasped and arched his back once more.

This was pure torture. Sirius could feel the bile rise up in his throat but his lips were sealed shut. It was literally like watching a train wreck.

Regulus was acting all whiny and needy – which was completely different from his usual self – and laid submissively pliant for James. Meanwhile James (Sirius’ ex-best friend) was all possessive and dominant alpha now and… shit, shit, shit, I’m really about to witness my best friend ravish my baby brother–

Sirius’ eyes were permanently wide, and if a rat could look horrified, he definitely did.

His limp and pathetic body was currently being dragged by Remus while Peter led the way. Normally, Remus wouldn’t have been able to drag Sirius like this since omegas are weaker and smaller than alphas, but because they were still rats then there was no difference.

Images and sounds plagued Sirius’ traumatized mind. It had barely been a few minutes since they escaped that room and the alpha was already experiencing severe PTSD.

After James and Regulus… finished, they had fallen asleep, still in the same position with James’ knot buried deep inside Regulus. Sirius shuddered violently at that fact.

It was finally at that moment when Remus had snapped out of his shocked daze – the first among the three of them; Peter and especially Sirius were still utterly horrified and frozen in place (well, Sirius didn’t have much of a choice but still).

Remus had pushed Peter forward and squeaked quietly, “Come on Pete, help us find a way out of here. You’re more used to being a rat that us.” And then, without another word, Remus slowly approached the frozen Sirius, gently nipped his tail, and started dragging him away.

The entire time, Sirius remained in a state of shock as unwanted and horrifying memories flashed through his mind.

He didn’t realize they finally arrived back at Gryffindor tower until Remus nearly dropped him going up the stairs to their dorms. For a moment, awareness seeped into Sirius and he felt terrible for letting his omega drag him like this. His instincts kicked in, not wanting his omega to be struggling like this, but the alpha unfortunately remained frozen and useless.

Peter pushed the door to their dorms open and as if on cue, Sirius suddenly felt a weird tingling sensation all over his body. Must be the potion starting to wear off…

Remus placed him in an open area on the floor so that Sirius would have enough space once he transformed back to his large human form. Remus then scurried to the bathroom, not wanting to be seen naked once he transformed back. Although Sirius was his boyfriend, Peter was still in the room already back to his human form.

It took a few more minutes, but Sirius eventually felt the painful stretch of his limbs and his world grow smaller. Finally, he was human again but laid frozen on the floor as the spell that Regulus had hit him with stayed strong.

Remus came out of the bathroom shortly afterwards, dressed back in his clothes, and muttered the reverse spell.

Immediately, Sirius leaped up to his feet. “That bastard! I’m gonna kill him!” he roared, scent turning thick with anger, as he stomped towards the door.

“Uh, maybe put some pants on before you do?” Peter said awkwardly.

Sirius glanced down and he was indeed butt naked. He huffed, not fazed at all by his nudity (he’s walked around in the dorm naked many times) but hastily changed into some clothes anyways. Then, he stomped back towards the door.

But Remus quickly stood in front of him. “Sirius, calm down first!”

“Calm down?! Moony, you can’t tell me to calm down after witnessing that!” Sirius’ face turned green and he put a hand to his mouth. “Merlin, I’m gonna be sick. I can’t believe that just happened!”

“I know right? It was both horrifying and oddly arousing,” Peter said.

Sirius froze for a moment before glaring at Peter and grabbing him by the collar. “Did you just say you were aroused by watching my baby brother get deflowered?!”

Peter immediately cowered. “N-No no, I didn’t mean that–”

“Let him go, Padfoot,” Remus sighed.

Sirius sent another threatening look at Peter before shoving him away. “You’re right, there’s more pressing matters to deal with at the moment.”

Remus crossed his arms, remaining right in front of the door. “And how exactly do you plan on doing that? They’re still in the room of requirements so there’s no way of getting back in. And how do you even explain to them that you know what just happened? What, do you tell them the truth? Tell them that we illegally turned into rats, stalked James, and then watched them have sex?”

Sirius gagged. “Moony, don't say that word!”

“But that’s what happened. They had sex.”

“No, James brotherfucking Potter took advantage of a child! A child!” Sirius wailed, flailing his arms around.

“Regulus is not a child.”

“And he’s clearly not a virgin either,” Peter added unhelpfully.

Sirius let out another loud, miserable wail. Remus sighed. “Peter, keep your mouth shut. Sirius, I love you but stop being so dramatic. It was only inevitable for Regulus to start dating someone. He’s a beautiful omega, James is a handsome and kind alpha… if anything, you should be glad it’s James.”

“Glad? Glad?!” Sirius spluttered. “How can I possibly be glad to know that my precious baby brother is getting fucked by a knothead?!”

Despite the situation, Remus’ lips quirked upwards in amusement. “If James is a knothead, then what does that make you?”

“A good, protective older brother who’s gonna castrate that good-for-nothing Potter,” Sirius deadpanned.

“‘Potter’? Oh, is there a rift between you two now?” Remus raised an eyebrow, now finding way too much amusement in this absurd situation.

“Moony, take this seriously,” Sirius whined. For him, the situation was so serious that he didn’t even make a pun. “And to answer your question, yes there is indeed a rift between us. And it’s all his fault.”

“Pads,” Remus chuckled softly, getting closer to the alpha to place a hand on his shoulder. “You can’t help who you fall in love with.”

Sirius had a pained expression on his face. “But that’s the thing – what if James isn’t even taking this seriously? What if for him, it’s just about the…” Sirius made a lewd gesture with his hands, still adamant about not saying the word sex.

Remus blinked before a fond smile overtook his features. “Aw Pads, you’re really worried for your brother, aren’t you?”

Sirius huffed while crossing his arms. “Of course I am. I’ll always worry about that little shit. Especially since he’s not very good at showing emotions and dealing with… this type of thing. So it’s not just me being an annoying, overbearing big brother – I’m genuinely concerned and have good reason to be.”

“I know you do, and you’re the best big brother anyone could have. Regulus is lucky to have you. But didn’t you see the way he looked at James? The way he smiled? I was honestly shocked to see him smile, I’ve rarely ever seen him look that happy before. I think he’s doing a pretty good job with ‘showing his emotions and dealing with it,’” Remus said, still smiling softly.

“But James–”

“Oh Padfoot, one would’ve had to be blind to not see the love and fondness in James’ eyes. The way he showered Regulus with praise and affection. He made sure Regulus was okay and enjoying himself the whole time, which isn’t something many alphas do. I think he really does love your brother as much as he loves him.”

“In my opinion, he looked completely whipped for Regulus,” Peter piped in. Remus laughed and agreed with that, before a pensive look crossed his face.

“And think about it… James got over his infatuation with Lily, and a while afterwards, he suddenly started looking happier which was around the same time he started sneaking around and obviously keeping a secret. And we know James – he wouldn’t do all this if he weren’t completely serious about Regulus.”

Sirius took all those words in and was silent for a long while until he eventually slumped onto the floor, his head leaned back against the wall. Remus sat down beside him and placed his head on his shoulder. The alpha immediately wrapped his arms around Remus and enjoyed his comforting presence as he mulled over his thoughts.

Finally, Sirius mumbled, “I’m still gonna give dear Prongs the shovel talk.”

Remus laughed softly. “Fair enough.”

Sirius sat in the great hall with what could only be described as a constipated look as he fidgeted around in his seat.

“Keep doing that and our housemates will think you really need to use the toilet,” Remus commented, his eyes still glued to a book.

Sirius sighed loudly and brought his hands to his face. “I know that I agreed to be civil last night, but now I really want to go find James and choke him.”

“I don’t think your brother would like that very much,” Peter snickered. Sirius gave him a murderous look which quickly shut the beta up.

“Siri, this isn’t the first time James has arrived late to breakfast,” Remus said pointedly.

This only made the alpha more agitated. “I know and I hate it! All this time, I thought he might’ve been hooking up with random omegas but no – it’s been my fucking brother!”

At that moment, James finally appeared through the entrance. Sirius snapped his mouth shut and could only scrutinize his friend. James looked as he always did, nothing was out of place. His hair was a bit messier but that was all. And then, Sirius noticed a dark red spot on his neck and he immediately glowered.

“Hey guys,” James said far too casually. He sat down right next to Sirius, and if the poor alpha knew what was going through the other alpha’s mind, he surely would’ve kept his distance.

“Had trouble sleeping?” Remus asked, his tone innocent but a mischievous glint in his eyes. Sirius glared at his boyfriend but the omega merely tilted his head in feigned curiosity.

James blushed slightly and averted his eyes. “Uh… yeah, something like that.”

“Oh I’m sure Prongs had a great night,” Peter said, snickering again. Remus suppressed his own laugh while James grew visibly confused. Sirius just wanted to throttle everyone in this damn room (except for his precious Moony of course).

James awkwardly scratched the back of his neck while throwing glances at Sirius. “Um, why does Padfoot look like he wants to kill me?”

“Oh I do,” Sirius blurted out.

Remus gave him an exasperated look. “No you don’t.”

“I do,” Sirius gritted out, now openly throwing daggers at James through his glare.

“Haha Pads, you’re so funny,” James chuckled uncomfortably, scooting a bit further away from the other alpha. Sirius was not amused.

“Don’t like close proximity with Blacks?” he tried asking nonchalantly but it came out more like a growl.

“Pads, what are you on about?”

“Oh it’s just an innocent question, Prongsie. What are you on about? Did you interpret my question the wrong way?”

James grimaced and shifted around in his seat. “I don’t know why you’re even asking? I just scooted away because you’re clearly not in a good mood–”

“Damn, I wonder why?” Sirius snarled.

At this, James bristled, his instincts reacting to another alpha seemingly threatening him. “Well, care to fill me in?”

“I know you’re not the brightest but don’t play dumb!”

“You’re the one who’s being dumb right now! I have no fucking idea why you’re so angry – I know I didn’t do anything!”

“YOU LITERALLY FUCKED MY BROTHER!”

All the color drained out of James’ face. “W-What…” was all he could stutter out.

“Sirius! I thought we agreed not to reveal it to him like that,” Remus hissed out, but James heard him. He blinked owlishly at his three friends, looking like he’d just seen someone die.

“How– W-Why are you saying that?”

“Don’t deny it,” Sirius growled.

James gulped but was dumb enough to try anyway. “I think you need to visit Pomfrey. I don’t know why you’d ever say something like that.”

“You little piece of shit–” Sirius snarled as he lunged for James’ throat. The two alphas fell as a heap onto the floor, immediately attracting the attention from everyone else. Students started chanting and placing bets, with Peter being the leader of it all. Remus could only stare at the two fighting alphas with a mix of bewilderment and frustration.

Before any professors could intervene, someone suddenly cast petrificus totalus on both boys. Sirius felt a sinking feeling of deja vu, and when his eyes flickered towards the person who cast the spell, his heart dropped.

Regulus was glaring at them in annoyance. He rolled his eyes before levitating the two alphas and taking them out of the Great Hall. Remus and Peter quickly followed after them.

“You’re so embarrassing. I always have to deal with your bullshit,” Regulus grumbled under his breath. He led them to an empty corridor and then crossed his arms, a scowl on his face as he said, “I could just leave you here floating like fools, you know?”

“I get why you’d do that to Sirius, you kinda hate your own brother, but why would you do that to James? Isn’t he like your boyfriend?” Peter suddenly blurted.

In an instant, Remus smacked the beta with an alarmed look while Regulus went dangerously still. His usually pale face somehow seemed to grow even paler and a brief look of panic crossed his expression before he quickly tried concealing it.

“Where did you get that idea from?” Regulus tried saying coolly but everyone could hear the slight tremble to his voice.

“We literally saw it with our own ey–”

“Peter! You never know when to keep your mouth shut!” Remus hissed as he slapped a hand over Peter’s mouth.

Regulus was staring at them with an unreadable look in his eyes. His face remained ghostly pale and he didn’t move an inch for a few more seconds until he hesitantly released James and Sirius from the spell.

The two alphas fell onto the floor, groaning. “You’re really gonna fuck me over with those petrifying spells of yours,” Sirius complained off-handedly. But that was enough for the smart omega to put all the pieces together. In an instant, Regulus’ scent reeked of humiliation and his face flushed a burning red. Then, as Sirius got up from the floor, Regulus slapped him. Hard.

“R-Regulus!” Sirius gasped, cupping his cheek.

“I can’t believe you!” Regulus shrieked in a manner very unlike him. Embarrassment clearly washed over the omega in waves. “You– you–”

James hastily got up from the floor. “Love, calm down! You aren’t making any sense.”

James obviously forgot about everyone else as he scrambled to calm his omega down. Otherwise, he would’ve been more careful to not accidentally use any pet names on Regulus. But Sirius heard that “love” loud and clear, and it ignited his anger once more.

“You shameless brotherfucker!” Sirius roared, already lunging towards James again. But Regulus quickly got in between them.

“You’re the shameless one!” Regulus seethed, pointing an accusing finger at his brother. “I don’t know what kind of kick you get out of watching people be intimate, but that’s the biggest invasion of privacy! How dare you?! I know you’re a prankster but that’s just taking things way too far!”

Although Sirius was still furious at James, he and Remus and Peter quickly grew sheepish and squirmed under Regulus’ intense glare. They all felt bad for what they’d done last night, and now knowing that Regulus figured out what they did made them feel worse.

“Huh?” James said dumbly from behind the omega. “Why does it seem like you all know something I don’t? What are you even talking about?”

Regulus clenched his jaw and grit out, “They saw us.”

James’ face slowly went pale. “…saw us?”

“Do you remember that stupid rat from last night?”

“…yes…”

“Well that stupid rat is right in front of us. As well as the other two dirty little rats.”

James looked ready to pass out at that moment. He ran an anxious hand through his hair and licked his chapped lips. “B-But… how is that even possible?”

“Magic,” Regulus said dryly.

“Look, w-we didn’t mean to! I-It was an accident, we swear! If we’d known what would happen, we would’ve never made that potion in the first place!” Peter exclaimed.

Remus sighed. “Pete’s right. We’re really sorry for sticking our noses into your business. We honestly thought we’d just catch James doing something silly, we never expected to see…”

“To see us fucking?” Regulus scowled. The three marauders winced.

James’ scent suddenly flared in anger. “You saw my omega like that…” he growled lowly, his eyes briefly flashing red and his canines glinting.

Remus quickly tried placating James. A feral alpha would not be good in this moment. “I’m also an omega, so no need to get angry at me! Sirius is literally his brother, and Peter… well, if you want to shred Pete to pieces, do it later when you’re calmer.”

“Hey!”

“Still doesn’t make it any less mortifying,” Regulus muttered, now avoiding all of their eyes.

James breathed out raggedly, trying to calm down slightly. “I really can’t believe you guys did this…” he said with a deep frown. Remus winced and Peter hung his head in shame. Meanwhile Sirius stared intensely at the other alpha.

“Look, I know what we did was wrong but… if it weren’t for last night, I would’ve never found out about this,” Sirius gestured to the alpha and omega pair. “Were you ever going to tell me?” he asked in a hurt voice. Although James was still shocked and angry at what his friends had done, he felt a pang of guilt.

“I– We– You’re my best friend, Sirius,” James stuttered out slowly. “And Reg… he means the absolute world to me. And I just… I didn’t know how to tell you. I didn’t know how you’d react.”

“It must’ve been quite the dilemma, huh?” Sirius huffed out a humorless laugh. “You were secretly seeing your best friend’s little brother for Merlin knows how long. What a fucking cliche– the whole, ‘falling for your best friend’s brother.’ A sort of forbidden romance. Do you get a thrill out of doing things you know you shouldn’t?”

Even though Sirius was directing all of this at James, Regulus quickly stepped in with a cold glare. “And this is precisely why we never told you. I knew you’d be an insufferable ass about it. And I don’t care what you think Sirius – this isn’t some bloody ‘forbidden romance’ that must forever be kept secret. The secret’s out now, so we won’t hide anymore. And we certainly don’t need any of your opinions.”

Sirius froze, now staring at his little brother who continued glaring fiercely at him. It was a tense few seconds before Sirius finally sighed deeply. “You’re in love with him?”

Regulus flushed slightly but kept his eyes resolutely on Sirius’. “Yes.”

Sirius felt as though someone had dumped cold water on him. He turned to James next. “And you? Are you in love with my brother?”

“Deeply so.”

Sirius’ face turned grim but he nodded very slowly, eyes flickering between Regulus and James. “Ok. I’m sorry! As long as you’re both happy then…” he grimaced momentarily, “I guess I give my blessings.”

Regulus scoffed and was about to quip back but James quickly said, “So we’re good?”

“Hurt my baby brother and you’ll pay for it,” Sirius growled before easing up again. “But other than that, yeah we’re good.”

James grinned hesitantly and the two alphas awkwardly approached each other before falling into a tight embrace and crying out dramatically into each other’s shoulders.

“Prongsie, don’t ever keep secrets from me again!”

“I won’t Pads! And you better not try to throttle me again! I’m your best friend, remember!”

“A bastard is what you are! But no worries, I won’t have to throttle you unless you ever hurt Reggie.”

“I love him so much, Pads – how could I ever hurt him?”

“Merlin, I love him too, that adorable little brat.”

“So fucking adorable!”

“Alphas are so odd,” Remus remarked, having watched the whole ordeal from the sidelines.

“They’re complete imbeciles,” Regulus rolled his eyes, his face bright red. He lightly hexed the two older boys, causing them to yelp and pout at the omega.

“Reggie, stop casting spells on me!” Sirius exclaimed.

“I’m still incredibly angry at you!” Regulus snapped, ignoring his brother’s words. “I’m angry at all of you! Such perverts!”

“We told you – it was an accident! And trust me, we never in a million years would've wanted to see that! I literally had horrid nightmares last night!” Sirius shivered and looked ready to puke his guts out. Truthfully, he’d never be able to see his brother the same way again. The image of a Regulus so needy and submissive haunted his mind.

Regulus also couldn’t look at Sirius the same way, knowing that his brother knew of the way he got during sex. That was only ever meant for James’ eyes.

James was also conflicted, hating that anyone else had been able to witness his omega in such a vulnerable state. The only solace there was was that Sirius was related to Regulus, Remus was a fellow omega, and Peter… well shit, Peter was definitely a pervert. James glanced at the beta, who quickly cowered away from the alpha.

“You dirty fucking pervert!” James snarled, immediately lunging towards the shrieking Peter.

The only good thing about this whole disaster was that James and Regulus would no longer have to hide and meet up secretly in abandoned classrooms and broom closets. Well… they technically hadn’t met up in a broom closet in ages – not since a specific incident. But that was a whole other story for another time.