"You don't have to tell me that it's important to protect Rose," Jack says, and every word is sharp enough to draw blood. "I would die to keep Rose safe. I thought I proved that to you, Doctor -- or didn't that count, since I didn't actually die?"
Jack and the Doctor exchange glances again. Rose decides that it's a good thing for Jimmy Stone's health that he is currently enjoying Her Majesty's hospitality at Belmarsh Prison.
He watches them sleep -- when he can. It isn't as easy as one might think. If he starts off in bed with the humans, it's a challenge to extricate himself after his brief sleep cycle. Rose clings. No, that isn't fair. She... intertwines. The only word that describes it properly is a Gallifreyan verb that refers to the interaction of two or more gravitational fields. Never mind the bloody physics -- he can't get out of bed without waking Rose.