His fingers were dancing and tracing against Colin's skin, not staying in any spot too long unless he heard a moan or a groan. Then his fingers stayed to find out if it had been them or something else. And there was a fair bit of moaning, but to the best Zach could tell, he hadn't found any of the best spots yet.
Colin pulled back, and Zach breathed. Yes, his hands still kept moving, but...how had it taken so long to notice? Zach had been trying to keep his focus...upstairs so to speak, given Colin...but Colin was a bloke, was most definitely a bloke, and that reaction spoke to it all the more. His hips pushed up against Colin's slightly without thinking. Right. Upstairs. Upstairs.
There were...words that weren't moaning, and more than that Colin was asking...oh bloody hell a question. The blood was not flowing in that direction, but Zach had to try for Colin. "Body's made to...react," Zach spoke through heavy breathing, "It's...sensitive there, can feel real good." Even better when not trapped. No, wrong kind of thinking.