Dean would be so nervous! He’s faced all sorts of monsters and nightmares before but he never thought he would find himself sweating at the idea of sex. But it’s not sex, not sex like Dean knows and not sex he’s ever had before. And Cas is sweet and encouraging, not making a big deal out of anything, content with whatever Dean is comfortable with, would be happy with embracing and butterfly kisses for all eternity. But Dean loves sex and he loves Cas, so he’s going to find a way to make them work together, dammit. Dean is going to do this HE’S GOING TO SUCK A COCK LIKE A MAN.

Cas would run his fingers through Dean’s hair, not pushing, never pushing. Actually Dean wouldn’t tell Cas his plan, he wouldn’t want to risk disappointing Cas if he chickened out even though there’s nothing Dean could ever do to disappoint Cas.

Cas always bucks so beautifully when Dean gently bites his nipples so that’s what he does, feeling Cas surge up into the circle of Dean’s hand pumping and priming Cas’ tight, hot dick. The dick Dean would be taking in his mouth, hell or high water.

Handjobs were easy because Dean could easily do what he liked but he’d never done this before. But he could feel his own cock twitching as he thought of what it felt like to have a mouth wrapped around him, licking, sucking, teasing, and tonguing. So as Cas’s hands mess up Dean’s hair in erratic swipes, Dean kisses down Cas’ torso, taking a gentle nip at his bellybutton and that’s when Cas’ hands falter with something other than lust and Dean knows that Cas knows what hes going to do so he can’t fucking back out now, he’s gonna do this he’s totally going to do it.

His hand tightens around the base of Cas’ erection and his lips slowly, deliberately press into the skin of Cas’ gut and hips. And then it’s the moment of truth and he holds Cas straight out and he can’t bear to look up at his angel as he tilts his head and touches his lips to the side of the shaft because that’s a hell of a lot less intimidating than the wet, spongy head. He pecks once and he’s a step in the right direction: his lips have made contact with a prick and hell if he’s not proud of himself.

But then he thinks again of what it’s like to push past hot willing lips and he feels another gush of warmth in his own belly and that gives him the courage to kiss Cas’ dick a little higher and closer to the head and he makes himself think about how good he’s going to make Cas feel when he does this. If he’s eaten pussies out, he can get a cock in his mouth. It’s a lot less messy, right?

He swallows hard and runs his tongue around the underside of the head and he thinks that it doesn’t taste any different than anywhere else he kisses Cas, tastes like sweat and salt. He actually gets a little more skin in his mouth than he intended when Cas slithers around on the sheets, grunting with the effort of keeping himself still and the whines and groans behind his lips. That’s just not going to do.

So Dean does the only thing he can - he presses the circle of his swollen lips to the tip of Cas’ cock and it’s like the skin tangent to his angel’s is fucking electrified. His lips are tingly and oversensitive and he gasps and that just opens his mouth wider and that’s how the head slips inside.

The texture is a little different than the rest of the skin Dean has kissed so many times but it’s not unpleasant. It’s soft with a sort of grainy texture and he maps it out with his tongue. It’s really not bad at all. And then his imagination gets ahold of him again and he thinks about what what he’s doing must feel like to Cas and his crotch is so tight and goddamn is he aroused right now. He’s aroused with another man’s penis in his mouth and it’s kind of fucking hot as fuck.

And it’s not just any man’s penis; he’s not sure he could do that. It’s Cas’ and the magnitude of the fact that he’s doing this for the guy he is maybe sort of in love with hits him and he begins gently sucking and Cas’ hands start roving again.

He reaches down with his tongue, wetting as he goes and that makes it easier to take more and more into his mouth. It turns out the hard part was psyching himself up for this because it’s easy and natural and everything slides so nicely and he quickly figures out how to optimize between suction and bobbing and it’s not long before Cas is writhing and his fingernails are scrabbling at Dean’s shoulders and Dean actually feels so fucking amazing knowing that he’s the one giving this kind of pleasure to Cas, knowing he’s the first and last to do this for him.

Who knew that having a cock in your mouth could make you feel so powerful?

Cas’ movements start to stutter as Dean sucks the head of his cock like a lollipop, hard and tight, and Dean knows he’s close. The idea of swallowing is really kind of gross but he thinks again to what eating out a girl is like and really how is it that different and this way he can spare them the clean up.

Determinedly, Dean hilts Cas’ dick into his mouth as far as it will go. He can feel what’s left outside his mouth and it’s actually a little disappointing - he’s going to have to work on that. But he pumps the remainder tightly with his fingers and reaches a knuckle of his other hand down behind Cas’ balls and twists it into the skin there, kneading Cas’ prostate from the outside and apparently that’s all it takes for Cas to unravel. The hands in his hair twist sharp and painful but in such an exhilarating way and Dean draws once more on Cas’ cock like an obscene cigar and that’s when the taste in his mouth changes to something a little more bitter and biting. He didn’t even feel Cas come, just all of a sudden there was enough liquid in his mouth for him to swallow and he realizes then that he’d given a blowjob and swallowed. Part of him still felt it a little bit dirty and forbidden but that part only causes all his other parts to contract with lust and arousal even as Cas goes limp below him.

He knew from personal experience how sensitive his penis was after an orgasm so he made sure he’d swallowed everything and then slowly slid Cas’ softening erection out past his lips. Cas whimpered just a bit and then his hips settled back into the bed and his hands started moving again, running all through Dean’s hair, thumbs smoothing over cheekbones and fingers hooking behind ears. His eyes were closed and he looked blissed out, but Dean was hot all over. He’d done it, he’d given this man he cared for so much a gift from himself and part of him was just as relaxed and content as the angel below him. But a large part wants to just close Cas’ splayed thighs and rock himself into the crease like a stag in a rut because fuck if the fact he’d just GIVEN A BLOWJOB (and quite a successful one, thanks very much) wasn’t making him all the hotter.

Cas cracks an eye open and Dean knows he’d done well, could tell that even though Cas would never have asked this of him that it made Cas so happy that Dean took it upon himself to to do it. He also felt relief as he saw that Cas wasn’t going to talk about it, wasn’t going to praise his skills verbally yet because it would make Dean embarrassed. But he did reach out and curl his fingers over Dean’s shoulders and tugs him up and closer. He keeps pulling until they’re face to face and proceeds to kiss and lick whatever come is left in Dean’s mouth away and fuck Dean had just gone down on him and fuck if he wasn’t hotter than ever.

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