He brought a hand up to settle on the back of Jack's neck. Enjoying returning the easy kisses. Was faintly surprised to realize to he content to do this for good long while, without trying to eescalate things.
He did pull back though. "So. One last confession. I actually don't think this will upset you, exactly. But in the interest of full disclosure. And because I'm still not sure what to make of it. You're not the only Jack I've been having heart to hearts and making out with on the TARDIS floor. Although that certainly won't be happening again, with that one. He comes from rather disturbing, to me, timeline. Probably disturbing to you, too. And it became quite clear that he and I are not remotely compatible. Do you want the longer version?" he asked, eyebrow raised.