Jack felt a little confused when the Doctor let go of him and lay back. He wasn't sure really what he expected, but there was something about that smile. He looked more like he was.. waiting for something than pulling away. As it came to Jack, his face lit up as if he were a child on Christmas, and suddenly he couldn't stop himself from smiling.

He was excited, and without any delay, hastily began taking the Doctor's suit apart piece by piece and ducking down to kiss his neck again. He supposed the bed would have to be good enough for now. And there was potentially always time to try other things as well. "You're sure it's all right? Because once I start... I might not be able to stop myself..." He actually felt a little worried about it, wondering if he could have that level of self-control.