"I don't think I could stop," the Doctor admitted, his own voice quiet and vulnerable. "Whether I like it or not, Jack Harkness, you've embedded yourself fairly deeply in my hearts. And I don't say something like that very often, so feel honored."

He felt another embedded soul move closer to him as the TARDIS appeared not far off, a few blast scorches across her side, but generally in a better mood now that she wasn't being chased. The Doctor gave her a small smile, and then turned back to Jack.

"Guess we're stuck with each other. You, me, and the TARDIS."