Here are the very few I've done recently: Sam & Jess: [R rating]
Sam is so straight in my headcanon. It's all about the pussy for him. Well, okay, he's a good participant in the MMF threesomes, but there still needs to be vadge in the room.
Cas had a way of making it seem like he had never spread Dean out underneath him, never touched and revered him from head to toe. Every time he was diligent about relearning every heated inch of Dean, keeping him still with promise of reward.
The bruises will blend in with the marks of the job, but either of them can tell you exactly which one they placed, when, and the reason why is always the same.
It was not that long ago, but many lifetimes, when Cas would watch Dean sleep, puzzling through the idea of human sleep, calming the distress of his charge. Those days have past.
Sometimes he has to look, to check. Dean gets lost in the act much more easily than he ever does. And there are so many things Castiel doesn’t even know how to start learning.
Like how to trust again. And one of just Castiel, that's not got a proper name, but I like to call it DEEEEEEEEEAAAAAAAAAAAN: [(PG)]