Two days later, and Castiel is climbing through his window at three A.M.- naked. Dean wakes up to a slow and sloppy kiss, to which he responds with a push in Castiel's direction. The guy looks offended. And high, Dean thinks, and it wouldn't really surprise him if Castiel was.
It takes him a moment to fully process what's happened before he speaks.
"Sorry, didn't know who you were," he murmurs, absently raising his hand to wipe the sleep from his eyes. He pauses when his eyes focus a bit more, then frowns. "Are you- Fuck, are you naked?"
Castiel grins dopily and nods. "When I smoke, I get-" He closes his eyes and tilts his head back, searching for the right word. "I need sex."
Dean snorts at that. "You get horny?" he asks.
He has to hold back a laugh when Castiel's eyes fly open and he nods excitedly.
"And climbing through my window in the middle of the night with no clothes on is your way of asking for sex?"
Castiel nods again and Dean can't decide if that's hot or stupid. Later, he decides it's both.
He looks Castiel over once, then nods.
"Fine. Let's get started, then," he murmurs, pulling Castiel in for a kiss. This one is sloppier, rushed. He pulls himself in to Castiel's lap, boxers brushing over his already-hard dick and moans into the kiss.
When he pulls away, he moans again, louder, because there's pressure and friction in the perfect place and, god, it feels so good. Dean's a little grateful that Sam is the only one home. He's fully seated in Castiel's lap, rutting against his dick. It's just enough friction to tease the both of them, to make them both just that much more desperate.
Dean sheds his boxers quickly, crawling off Castiel's lap to leaf through the drawer on his bedside table. He pulls out a small circular bottle and tosses it to Castiel, who catches it clumsily.
"I figured that'd make things easier this time," he murmurs, making his way back into the other's lap. "Not that what you did last time wasn't totally hot."
Castiel chuckles. Opening the bottle, he tells Dean to lift himself up. He squirts some of the lube on to his fingers and slowly spreads it over Dean's hole. Which, by the way, is still sore from the other day.
Dean hisses, steadying himself on Castiel's shoulders. He pushes one finger into Dean, who makes a strangled whimpering sound. "You were right," Cas mutters, slowly- and, God, it's like he's torturing Dean- pushing a second finger in, knuckle deep. "It is easier than last time."
By the time he has three fingers in, Dean is whining and begging Castiel to just fuck him already. He decides to comply, telling Dean to ride his fingers while he gets himself ready. Dean does as he's told and Castiel is sure that it's way hotter than Dean down on his knees. He pulls the cap of the lube bottle open with his teeth and stops.
"No condom?" he asks, and Dean shakes his head.
"Knew I forgot something," he mutters, breathing heavily.
Castiel squirts some lube out on his free hand and spreads it over his dick. Dean whines in disappointment when Cas removes his fingers. But, that disappointment is quickly replaced by excitement.
"Want you to do all the work, yeah? Just do what I tell you?" Castiel asks. All Dean can do is nod in response.
He steadies himself with shaking hands on Cas' shoulder as he lowers himself onto the other boy's dick. He's breathless by the time he's fully seated, thighs already burning. Castiel lays back, running his hands over Dean's lower half carefully.
"Alright, jock boy, want you to ride me slowly. Take your time," he instructs.
Dean does just that, letting out broken moans every time Castiel's cock brushes over his prostate. He wants to move faster, wants to rush it and feel his orgasm hit him like a wave, but he can't. Castiel asked him to do this, so that's what he's doing.
It doesn't take very long for him to feel the familiar warm feeling in the pit of his stomach (teenage stamina sucks). He lets out a long moan, hands braced on Castiel's chest as he spills, untouched, onto it.
He's still riding out his orgasm when Castiel starts to buck up into him, making Dean whimper and whine due to overstimulation. Seconds later, Castiel is coming in Dean's hole, groaning in satisfaction.