Unexpected

To her surprise, the hand that cups her cheek is gentle, and the lips sliding against her own are soft. Sirius’s stubble tickles her face and she lets out a breathy laugh, pulling away slightly. She bites her bottom lip as green eyes meet grey, both dark with desire.

Carefully, Sirius places the empty bottle of alcohol on the low end table behind them without breaking eye contact.

“Are you sure, Evans?” He finally asks, voice raspy and low. Lily shivers at the sound of it.

“I want you, Black,” Lily answers, her tone almost challenging, almost like she thinks he doesn’t want her just as much. “Fuck me until we both forget tonight, just for a little while.”

And, well, Sirius never could say no to a challenge. Especially one as tempting as that.

Having said what needed to be said, Lily nudges Sirius’s knees down and climbs into his lap. He’s there, waiting, and captures her lips with his own, large palms cupping her face gently. He has callouses from years of beating for the Gryffindor Quidditch team, and they feel heavenly against her soft skin. Her hands find his shoulders, broad and defined even through his robes, but it’s not enough.

Lily fumbles with the clasp of his robe, and Sirius chuckles lightly against her mouth. She pulls back and makes a face at him, before reaching over to grab her wand off the end table.

With a quick spell, the buttons on Sirius’s shirt beneath his robe disappear. Lily smirks at his outraged expression as she replaces her wand.

As she manages to undo the clasp on his robe, she sees his expression melt into a sly grin, and a second later, his lips are on her neck, leaving a trail of open-mouthed kisses as he makes his way to her jaw. He peppers her jawline with feathery little kisses as she grips his shoulders, before finally sucking on the skin just under her left ear, leaving a dark bruise.

Impatient, Lily seeks out his lips with her own, and as Sirius’s tongue licks at her mouth, she pushes his robe off his muscular shoulders and to the ground, before sliding her small hands into his open shirt. She’s not surprised to find his chest almost hairless, Sirius is definitely the type to shave, but she certainly enjoys the smooth expanse of muscle beneath her palms.

Sirius, seemingly taking his cues from her, slides his hands up under her jumper, settling them on her hips. Lily feels a flare of insecurity — she’s always been quite thin, lacking the curves that all her friends have and boys seem to drool over.

As if sensing her thoughts, Sirius breaks the kiss and leans his forehead against hers.

“You’re gorgeous, Lily,” he breathes, a hint of wonder in his voice.

Lily surges forward, pressing her chest against his and throwing her arms around his neck. She kisses him desperately, and he kisses back just as hard.

Sirius’s hands rub up and down her sides a few times before hesitating at her bra strap. Lily moves her hips back and forth encouragingly, and Sirius lets out a groan before unhooking her bra with expert fingers. He’s quick but gentle about helping her arms out of the straps, and he doesn’t pull her shirt off right away. He just slides his hands back under, and Lily gasps as someone else’s hands cup her bare breasts for the first time.

And what wonderful hands they are, she thinks. Sirius’s hands are warm and large, and his callouses drag deliciously against her nipples.

“Oh,” Lily breathes, and unthinkingly, she rocks her hips back and forth on his lap again. She can feel his erection through his muggle jeans, and she’s overcome with the desire to feel it closer to her center.

As Sirius rubs her nipples with the pads of his thumbs, Lily reaches down in between them and pulls the bunched up fabric of her skirt out from underneath her thighs, leaving only her knickers and Sirius’s trousers between them.

Sirius, enraptured by the sight, squeezes Lily’s breasts lightly in appreciation, loving the gasp it elicits. Her green eyes find his, and he stares into them as he gently pinches her nipples.

Lily’s back arches, pressing her breasts further into his palms, and she lets out a great whoosh of air. After a moment, she relaxes, and starts rocking in his lap again. Sirius pinches her nipples again, capturing her gasp with a kiss. She melts into him and his touch, and the wetness in her knickers is a cool contrast when it presses against her burning center as she grinds down on Sirius’s erection, his groans vibrating against her lips.

Then Sirius is pulling at the hem of her jumper, and Lily throws it off eagerly.

Sirius stares at her bare chest, silver eyes dark with lust. Then, he leans in and captures one of Lily’s rosy nipples with his mouth.

Lily lets out a gasp that turns into a moan as Sirius starts to suck on her nipple hard. A thought comes to her, causing her to blush at the crudeness of it; it's as if she were a new mother and her breasts were heavy with milk for him to drink.

She moans again at the dirty thought, finding the idea embarrassingly arousing.

Threading her fingers through Sirius’s long, dark hair, Lily holds him close to her chest and grinds furiously against the bulge in his jeans.

Sirius hums a laugh, her nipple still in his mouth. He pulls back slightly, just enough to look up at her with a rakish grin.

“You like that, Evans?” He asks teasingly. Lily just whines and guides his head back to her breast in response.

Sirius chuckles again, before suddenly flipping them over so Lily is laying on her back on the plush, burgundy rug in front of the hearth. Sirius hovers over her, one hand cradling the back of her head, the other braced against the rug, propping him up. She can see the muscles flex, and the sight makes her dizzy with arousal.

Sirius’s stare lingers on her as Lily shimmies out of her skirt and soaked knickers, a small, fond smile on his face.

When she’s completely naked, Lily moves to unbutton Sirius’s jeans, but her eyes catch on a trail of dark hair disappearing beneath the waistband, and she can’t help but moan.

“Why are you so bloody attractive?” Lily asks, glaring at Sirius. His eyes sparkle with mirth as he chuckles at her plight, before giving in and taking his trousers off in one smooth motion.

Sirius feels her between her legs, eyebrows raising when he notices how wet she is already.

“Excited, love?” He asks. Lily palms his jeans in response, smirking when he stifles a groan at the sensation.

“Seems I’m not the only one,” she teases back. He huffs a laugh, but then his face turns serious, and he looks right into her eyes.

“This is your first time?”

Lily blushes, embarrassed. “Yes,” she answers quietly.

“Right then, I know you’ve probably been told your first time will hurt, but that’s a load of hippogriff shite. At most, you should only feel a slight pressure that’s maybe a tad uncomfortable, and only for a second. If at any point what we’re doing starts to hurt, tell me straight away. Got it?”

Lily stares at Sirius, green eyes wide. Then, overcome with appreciation for the man hovering over her, she surges up to kiss him.

Several long moments later, she pulls away and rests her forehead against his own.

“Got it,” she whispers. Then, louder: “Now get on with it, Black. I need you inside me already.”

Sirius’s eyes darken, and he banishes his pants with a muttered spell.

Momentarily, Lily is distracted by the impressive feat of wandless magic. Then, she sees Sirius’s cock, and all rational thought flees her mind.

She’s never seen one in real life before, only in the dirty porno mags Marlene snuck into Hogwarts last year, but Lily thinks Sirius’s looks perfect — long, but not frighteningly so, and about as thick as two of her fingers held together. He’s hard as a rock, and the head is purplish-red and leaking precum. His cock curves upward slightly, enough to see a single, thick vein ridged along the underside.

Lily wants it inside her now.

She says as much, and Sirius laughs as he lowers himself towards her. Slowly, carefully, he starts to enter her, watching her face closely for any signs of pain.

Lily breathes through the small stretch, feeling the queer pressure Sirius mentioned before, but not the pain that she’d still half-expected. The glide is easy with how wet she is, and the pressure fades soon enough as she adjusts to the willing intrusion.

Halfway in, Sirius pauses and waits for Lily to nod. When she does, he pushes the rest of the way in with one gentle thrust. Lily gasps. The feeling of him seated fully inside her is almost overwhelming with how right it feels.

A tear leaks out of her eye, and Sirius freezes.

“Lily?” he asks, voice quiet and unsure. He cups her face gently with one hand, concern evident in his grey eyes. “Are you in pain? Do you want to stop?”

Lily shakes her head, trying to gather her thoughts. A moment later, she speaks.

“I feel… full, but in a good way. Like there was a piece of me missing and I’ve finally found it.”

“Oh,” Sirius breathes, shock clear in his voice. But when Lily looks up, his expression is unbearably soft.

Lily looks away, and the moment turns awkward.

“Are you ready for me to move now?” Sirius asks a few seconds later. Lily nods quickly, and then gasps as he does, eyes fluttering closed in pure bliss.

Sirius stares down at the woman beneath him, lost in the way she comes undone at  his touch. Usually, he likes sex fast and hard, but he can’t imagine doing anything other than worshipping Lily, slowly, reverently.

His hand still cups her face, so big against her delicate features. Her pink lips part with every moan he pulls from her, and he can feel his release building, but he refuses to finish before she does.

With that resolution, he ducks his head to her chest and swirls his tongue around her nipple before latching on and sucking, staring up at Lily through hooded eyes the whole time.

After only three hard sucks, Sirius feels Lily clench around him, and he bites her nipple lightly to stifle his moan. That sends her over the edge, and she climaxes around him, shuddering and gasping.

The sight of Lily reaching completion is too much, and Sirius follows, still sucking on her breasts.

When the last of the aftershocks fade, Sirius comes back to himself to find Lily whimpering under him, her hand in his hair holding him firmly against her breast as tears drip down her cheeks. She’s obviously overstimulated, but when Sirius tries to pull away, she wraps a leg around his hip, holding him inside her.

The movement gives him pause, and carefully, he removes his mouth from Lily’s nipple. He has an idea of what she wants, but he needs to confirm with her first.

“Lily?” He asks gently, and after a moment, she opens her eyes, peering down at the man laying on her chest.

Before he can get lost in the green of her eyes, Sirius forces out his question. If this isn’t what she wants, he’s going to be horribly embarrassed.

“Do you want me to… stay inside you?”

Lily just nods tiredly, and then pauses, letting the last of the overstimulation fade. Then, in a sleepy voice, “And keep sucking on my tits, please.”

The corner of Sirius’s mouth quirks up at the last word, amused that Lily is still polite even when half asleep. Nevertheless, he acquiesces to her request, but only after he adjusts their positions so they’re both lying on their sides, facing each other.

It’s like that, in the middle of the Gryffindor common room, suckling at Lily's breast with his softening cock still inside her, that he falls asleep.