Jack let the Doctor guide him into a kiss. He wanted more, to move fast, but now the Doctor was making him stop to think; something he wasn't used to doing much of in situations like this. Being human meant being guided by instinct and feelings. Deliberate thought seemed... odd. He helped the Doctor push off his jacket and shirt and let his hands run over his chest and shoulders before sliding down to his trousers to relieve him of those as well.

"You don't like the mystery?" He teased with a laugh. Maybe it wasn't just talking he was after, either. Jack kissed over to the Doctor's ear. "I'm thinking about how nice your moans sound and what you'll sound like when you've got my cock inside you." He kissed against his ear and just underneath it. "I'm wondering if I can get you to scream loud enough to piss off the Master."