Oh, it was lovely to have his Jack back again. Not dead, not different, just Jack the way he had been a couple of days ago. Warm and giving and generous, and his. Kissing felt different, though, in this body. New mouth, new teeth, new tongue. Oh, new tongue! Oh, yes, he liked this new body. He was sure he'd never been this good at kissing in the old one.
And the faint remnants of artron energy still buzzing round his body only added to the pleasure.
When Jack pulled back, the Doctor laughed breathlessly at his words, smiling into those blue, blue eyes. "Nice to meet you too, Jack. No need to be jealous. The other Jack - the one I was with before I got here - never met me in this body. This one's all yours."