When York got no response whatsoever, he'd begun to think that it was a bad idea. ...But Wash wasn't pushing him away, so it must not be too terrible, right? Any worries were pushed away when he felt the slight movements of Wash reciprocating. That... that had York smiling into the kiss, moving forward a little more to add a bit more force behind his kiss.
The hand behind Wash's neck slid up to get lost in his hair, and the other found a place to rest upon his waist.

If he was allowed to kiss Wash, he wondered what else would be accepted? God, just the thought of having his way with the man had York popping a semi, a little groan rising in his throat. He'd been imagining this for so long, and now that he had it he couldn't resist rocking his hips forward, letting Wash know just how interested in him York was.
Fingers slipped underneath the older man's shirt, only to toy with the waistline of his pants.
"Wash," York breathed, moving back only a little bit, the words being spoken directly against his mouth; "Wash, please--can I?"