Jack stood there and listened as the Doctor spoke. He had no idea, of course; he'd never heard that story before, and hearing it only seemed to make what the Doctor had done yesterday all the more stark.

But he was there for him now, and he didn't want him to be frightened (if he was or wasn't) or uncomfortable, and so he let his hand fall down from the Doctor's arm to his hand and he took a gentle hold of it, squeezing just a little.

"No damaging," he said with a small nod. "Not for either of us, right?"

He smiled, trying to reassure, and then gave a gentle tug on his arm. "Come on, this way."