James was an omega, he had already accepted that, but he had it in his head that there was no way he would have an alpha, he was fine with just having friends. Sirius didn't care about destined or omegas for the rest of his life, he just wanted to have fun, fuck some omegas and some alphas and have fun with his friends, James, Remus and Peter.
5 years of being best friends, nothing major ever happened. Well, at least not about them finding their soulmates or anything. Remus was an omega obsessed with books and usually lived with Lily, a super nice alpha who was always telling the alpha son of a bitch to fuck off along with Remus. Peter was a beta and was always stuck in a greenhouse and James, well James and he were always stuck together playing pranks and making fun of everyone. They were good friends, but something strange started to happen.
They all arrived on the train for their 5th year at Hogwarts. James headed to the cabin where they always stayed and with every step he took he felt as if something was intoxicating him, a scent stronger than all the others and it was good and intimidating at the same time, but mainly good. He tried to ignore it and entered the cabin and the smell was coming from there. He ignored the shiver that ran through his body when his eyes met those of his best friend, Sirius.
It was normal to smell other people, especially to identify if they were alphas, betas or omegas, but that smell was stronger than the others and Sirius knew it was coming from his friend when he entered the cabin. Something inside him lit up when he saw his best friend enter the cabin and start laughing and joking with Remus. He tried to ignore that feeling pulling him, he really did, but it got worse with the hours and with all the people getting close to James. Why did everyone have to talk to him so much and touch him so much and why did he smile so much?
The last straw was when a Hufflepuff hugged James and then left a kiss on the boy's cheek. Sirius didn't know where that anger came from, but he didn't care. He threw himself in front of Potter, between the boy and him, and practically growled at the poor Hufflepuff who ran away from both boys.
-What the hell is this, Sirius?-James asked, not understanding a word. Sirius, on the other hand, was being watched by some students who were passing by and by his friends.
James was talking to a Hufflepuff friend when a very strange Sirius stood between him and the boy and growled at the boy who ran away. Sirius' scent became thicker, stronger and more present, making James almost give in to his own legs, but he held on.
-I-I'm sorry- He said, looking confused and embarrassed. James found it adorable. He had been starting to notice his friend a lot since he had seen him on the train a few weeks ago.
-I don't know what's going on, James.-Sirius really didn't know, and that protectiveness and desire to be close to and smell and take care of James only increased, and that scared the Gryffindor.
-Dude, I think you need to relax.-James said as casually as he could.
A few months passed. Sirius continued to have that protective air towards James and James hated it, but his omega side loved it and felt good about it, but James wouldn't admit it in a thousand years, so he just tried to act normal with his friend. Sirius continued to feel different about James, but he tried to keep everything in order, but it was hard, very hard. He stopped being with other people, because something in him simply prevented him from even thinking about anyone other than James.
It was the weekend, which meant Hogsmeade was open and everyone would go there, but James decided to stay and play a basic prank. What he didn't expect was that it would go wrong and he would almost get caught, but luckily Sirius decided to follow the idiot Gryffindor through the corridors and pulled the boy into a locker before Flitchwick caught him. James was startled for a millisecond, but soon the mint scent that emanated from the person calmed him down, it was Sirius and he was dangerously close to him.
-What's up, Prongs? Playing a prank and not calling me? I could very well let you get caught. - He said, still holding the other's waist too close to him, but the closet was small and poorly lit, but Sirius could see the boy's sullen face a few inches lower.
-What's up, Sirius? You've been such an idiot lately and you still want me to call you for pranks, especially since it's the weekend, why aren't you in Hogsmeade picking everyone up? It's your turn, isn't it?! - Deep down there was a hint of jealousy in the Gryffindor's speech.
-Uh, I didn't go to Hogsmeade precisely because you didn't, little Prongs.- James was pissed at the other's speech and tried to free himself from the other's arms and leave the tiny space, but Sirius stopped him, pulling him even closer, making their bodies collide and a surprised moan came from Potter's lips. Sirius instinctively released some pheromones and James felt something dripping from his entrance and there he knew he was fucked. Sirius brought his face closer to the Gryffindor's neck and ran the tip of his nose close to the omnivorous glands and inhaled the scent that emanated from the younger, who unconsciously leaned under the older man's body. Sirius pulled James's chin and left a kiss on the other's lips and moved away a little, but without stopping to support the younger man and said:
-Not here, okay? - He looked at the face of his long-time friend who was now his probable soulmate. James made a sullen face and mumbled something indecipherable. Potter was limp in response to the sensations that Black caused him with just such an approach. Sirius tried to make the environment less, well, less him so that his friend could recover and so they could return to their room. However, James had a little problem and he didn't have any coats there and it was okay that there was almost no one at Hogwarts, but he didn't want to be seen around with his pants all wet.
-Er, I- James really couldn't believe he was going to have to talk to Sirius about this, he couldn't believe it. Sirius, as dumb as ever, didn't understand anything right away. -Fuck, Sirius, you're still a door, as Remus always says.- Sirius felt embarrassed for looking stupid for the first time in his life, but he wanted to look amazing around James, all of a sudden.- I need your coat.
-What for?- He asked curiously, but soon after a smirk appeared on the brunette's face.- You...?!?
-Just...give me the damn coat, Sirius.- He said, already pulling the other's coat and putting it around his waist. They both went towards the dormitory and Sirius threw himself on the bed and was about to start reading a comic, but James stopped beside him and said:
-We need to talk!- Sirius sat up in bed and signaled for the brown-haired man to continue.
-I know it's not just me and I know what this means, but I want to know what you think…
-About?- Sirius knew what Potter was referring to, but he wanted to see James say it in every word.
-Being soulmates, Sirius.- Potter had been considerably more stressed lately.
-Right! We're soulmates, there's not much we can do about it, Jay.
-It's just, it's weird. You're my best friend, Pad! We've known each other since we were 11 and like, it's rare for soulmates to find out early.- James looked at his own hands now.
-Jay, hey! It's going to be okay, okay?- He took the boy's hand and caressed it. They decided not to rush things, but fate had other plans.
James just couldn't sleep, at least not in his own bed, so he got up silently, grabbed some of Sirius's clothes from the closet, his own heavy blanket and curled up on the floor next to Sirius's bed. Remus woke up and honestly he didn't want to get involved in this, not to mention that omegas got a little aggressive when someone who wasn't their alpha approached their nest, so he dragged Peter out and decided to contact a teacher, but after breakfast. Sirius woke up and was surprised when he saw a James swallowed by blankets sleeping next to his bed holding on to one of his shirts and soon he understood why; James was going to go into heat.
The day went like this, James in his corner, extremely moody and Sirius quickly spoke to a teacher and promised to talk more about it as soon as everything was over and the dormitory would be theirs during that. James didn't want to go to bed at all, so the solution was to stay on the floor with him and now Sirius found himself lying down with a sleepy James lying under him.
-Six- He murmured, lifting his face and looking at the boy's face, who murmured back. - I feel something strange.
-What, Jay?- He asked worriedly, looking for some sign that something was wrong, but soon the concern faded when Potter's pheromones reached his nostrils. - What do you want, my dear?- James murmured something indecipherable and buried his face in the other's neck, wanting to feel more of the good smell that emanated from him. The Potter heir moaned softly at the sensation that only Sirius's scent caused in him. The omega's body was hot and Sirius knew he wouldn't be able to control himself, not with the Gryffindor's scent and his body hovering above him. -What do you want, James?- He asked firmly, without touching the boy in any way.
-Help me, Six.- He said between sobs.
-You have to tell me what you want, baby.- He said, trying to visualize the omega's face in his arms. In response, James just pressed his body closer to Black's, making his own erection rub against the alpha's thigh and the minimal friction made him moan softly.
-Please.-He whimpered, seeking more of that contact, but was stopped by Sirius who held his waist tightly with one hand and the other brought it to the boy's chin, pulling it up, just to have the view of his flushed face, watery eyes and red lips. Sirius pulled Potter's face and kissed his lips soft and it was like he was in heaven. How incredible it was to kiss James Potter and James felt the same when he kissed Sirius. Sirius turned his body on the smaller one, placing himself under him, with one leg resting between the younger one's knees, who writhed under him.
-Six, please.- The boy already felt terribly wet. Sirius, as much as he wanted to prolong that moment, couldn't, not with a sly James begging him for himself. He pulled the boy's shirt, taking it off and began to leave kisses, bites and hickeys on the tanned skin. James felt like it was torture. He tried to touch himself, but soon he felt his alpha's firm hand under his and a low growl, which made him want to cry in frustration. Sirius brought his mouth to one of the boy's hard nipples and bit it, making the Gryffindor moan and arch his back. He smiled, satisfied with the younger one's reaction. He played with that sensitive area, but only enough, he didn't want his boy to cum now.
He ripped off his pants from his Quidditch-toned body and saw the mark of his erection under the thin fabric of his white underwear and the wet mark on his ass, which made his own erection throb. He touched the bulge under his underwear and massaged it slowly, watching Potter writhe beneath him and moan breathlessly as he tried to formulate sentences that came out completely incoherent. Sirius, seeing the tears streaming from the omega's eyes, felt even more fucking excited, if that was possible, and soon took off his underwear, opening his legs and sliding a finger under his lover's wet entrance. James needed Sirius inside him urgently, and just feeling the boy's finger playing with his entrance made him border on madness. Sirius inserted a finger under the tight entrance and soon felt the Gryffindor writhe under his finger. Little by little he added another finger and soon James, already impatient, said:
-Fuck me already, Sirius, please.-He looked pleadingly at his friend. Sirius pulled out of the younger boy's warm interior and began to take off his own clothes. He pulled a condom from the bedside table. James, on the other hand, reached for his own cock in search of relief. Sirius quickly pinned the boy's wrist under his head, who looked at him blushing.
-Not without my permission, baby.- Sirius' presence not only excited him, but dominated him as well, and that, for James, was overwhelming. He nodded in agreement to the older boy, who only increased his own presence.
-I want words, Potter.
-Y-yes.
-"Yes, sir." It's going to be like this here, okay? This time I'll let it go.-He sealed the lips of the smaller Gryffindor who sighed.
He positioned himself against the boy's entrance and slowly penetrated the warm, moist cavity and holy shit, it was like being in paradise. He tried his best to wait for the boy's confirmation and willingness so he could speed up or even stop if that was what he wanted, and soon the confirmation came when a James, disoriented with pleasure, moved his hips. Soon the only sounds heard in that Gryffindor common room dormitory were those of hot bodies colliding and the moans of pleasure emitted by both boys' voices. James couldn't take much longer, Sirius even less, not with the sight of a panting James, moaning and writhing in front of him. His body was marked by small purple and red bruises and knowing that he was the one who had done it left his alpha incredibly satisfied.
Soon Sirius felt his gums itch and it was then that he remembered that it would be practically inevitable not to mark the boy as his, considering that he had already gotten out of control for a long time. He rubbed his nose against the younger boy's marked neck, without stopping the thrusts that were increasingly firm and uncontrolled. James felt like he was going to cum at any moment. And he was right. He felt a burning sensation in the place where Sirius had previously smelled and an overwhelming pleasure passed through his body, Sirius felt it too. They both reached their climax together. Sirius left affectionate kisses around the mark that had just been made and felt a sense of well-being that wasn't entirely his, it was James'. He forgot that the mark came with the knot, but he remembered it as soon as he tried to pull out of the boy and felt a horrible pain and James felt it too, so much so that he grabbed the larger body beneath him.
-Shit!- He muttered, remaining quiet.
-What now?- James, still a little limp, looked at him.
-Now we wait, my dear.- He left a little kiss on the swollen and red lips.-Are you okay?
-Hurum.-He agreed, feeling his eyes grow heavy. -Can I sleep?-He asked, his eyes already closed.
-Of course. He admired every detail of the boy who was now his omega.
-You're not leaving, are you?-He asked, already falling into a peaceful sleep.
-When you wake up, I'll be right here.- And James slept feeling the sensation of being protected in Sirius' arms, his best friend, his lover, his confidant and now, his alpha. This was going to take a few minutes, so Sirius didn't linger and laid his head between his shoulder and the curve of his neck and enjoyed the boy's scent, now mixed with his own.