Jack very nearly jumped at the tone in the Doctor's voice. He focused on that gap at the bottom of the door, and focused too on his breathing.

"You were the one that left me, remember?" he said quietly. Remember. Oh because he could now, couldn't he?

"And I did wait for you. I waited years for you. It might have been three days between her and you but it had been 112 years since I'd seen you. Or," he sighed, "I thought it had."

He shook his head and closed his eyes a moment.

"What? Someone else got attached? And that still surprises you?"