Bucky laughs and slams his hand down on his mouth, smiling and giggling as Steve's blush deepens. One part exhilaration, one part restraining himself so they won't get caught.
He takes his hand away and puts his mouth at Steve's ear. "You said we wouldn't get caught, Stevie."
Steve kisses the bolt of his jaw, then nuzzles at his ear. "We won't get caught if you keep quiet, Buck."
He'd give a smartass reply of his own, but Steve grinds their hips together and he has to grit his teeth to muffle a groan. Steve bites at his neck, then grinds into him again, and again. Bucky shoves his hips back, grinning as they form a rhythm that makes him sigh against Steve's skin.
So many people are walking by just outside the door, but no one's got a clue. They've done this enough to know how to keep themselves hidden. Different reasons now, maybe, but still the same old game they've been playing since they were teens.