Remus was so hard he couldn’t think straight.

It had only been ten minutes of having Sirius in his lap, hands cupped around his jaw as they kissed and slowly rocked their hips together, but it was driving him crazy. Sirius’ hair was tucked behind his ears so it wouldn’t fall over Remus’ face, and his back was arched against him so their chests were touching. His entire body was humming with every moan and whimper and gasp as their tongues slid against one another, and Remus was losing his damn mind.

It was probably the most turned on he’d ever been in his life, and he’d had sex before. Not a lot of sex, clearly, but he hadn’t felt this intense over a makeout session. But it was Sirius, so of course he did.

“I can feel you.” Sirius breathed, pulling back just enough to smile as Remus’ chased his pouting, swollen lips. “Did I do that to you?”

“Uh huh.” Remus nodded dumbly, not being able to get any other words out because his brain was fried at this point. He instead focused on pressing wet, desperate kisses across Sirius’ jaw, neck and collarbone that he could see. He felt hot and tasted a little like the sea salt and citrus body wash he had used in the shower that morning. He loved that smell, it was fresh, clean and strong.

Speaking of strong, every muscle in Sirius’ body seemed more prominent when he was on top. He wasn’t exactly heavy but there was a weight to him that made Remus feel dizzy. His thighs clamped around Remus’ hips, his biceps on either side of his head, his abs moving under his shirt as he rocked back and forth. Every inch of him was perfection and Remus felt his cock start to twitch at another moan in his ear.

“Fuck, baby. You’re so big.” Sirius whimpered, one hand tangling in Remus’ thick curls as he let his own head fall back. Thank god Sirius was wearing thin basketball shorts and not his usual skinny jeans, otherwise he doubted he could have felt Remus through them if he had. And god did he want to feel him, every single inch of him. “You’re perfect, my gorgeous boy.” Remus moaned again, hips bucking at the compliment. He usually hated compliments but it felt different coming from Sirius. “Wanna feel you, taste you…” his voice trailed off and his eyes fluttered close when Remus starting sucking just underneath his jaw. “Remus…Remus…”

“Fuck.” Remus grabbed at his hips and moved him back and forth a little more, suddenly feeling the urge to chase the friction as pleasure began to pool deep in his stomach. He felt like he was floating, like everything in the world was gone but them moving together.

“I wanna fuck you so bad.” Sirius sighed. “Want you deep…don’t wanna feel anything else but you fucking me…fuck, I need it.” Sirius tugged Remus’ hair a little, knowing he’d get a needy groan in response. It was still somewhat early days; figuring out their likes and desires and turn ons, but that was something Sirius had found out the first time they made out. And did he use it against Remus a little for his advantage, sure. But his boyfriend never complained. “Taste you, feel you on my tongue…in my stomach…pinning me down—oh!” Remus nipped at his skin at that. “You want that baby? You wanna fuck me?”

“Mhmm.” Was all Remus could say as the pleasure in his body started to ignite.

“I’d let you fuck me however you wanted…then I’d ride you into the fucking mattress, baby…I’d be so good to you…make you feel so good…god, I wanna cum on your cock so fucking bad, Moony—“

That did it.

The image of Sirius riding him so hard and so well that he came—shaking, nails digging into Remus’ chest or his shoulders, pressed against his chest as Remus fucked up into him so hard they could only hear the sounds of their skin slapping—made him see stars. Remus’ eyes rolled back and he pushed up desperately against Sirius’s ass as he started to cum, mouthing at his neck and moaning without a care in the world. His orgasm seemed to last a lifetime, wave after wave making him shake and clutch at his boyfriend until eventually, he sunk against the pillows and pressed his face into Sirius’ shoulders.

Sirius just held him, stroking his hair and nuzzling his cheek. Then he smiled a little.

“Don’t think I’ve ever made someone cum in their pants before.” he chuckled and even though Remus was blushing from embarrassment, he didn’t pull away.