Jack's smile faded when the tone of the conversation changed so suddenly. Why was he apologising? Jack wasn't entirely sure, though he had a pretty good idea so far... He didn't want him to feel sad or responsible for what had happened to him, but he couldn't help the fact that the closure did feel nice. He pulled the shirt on and started fastening the buttons, finding it somewhat hard to look at the Doctor without feeling awkward.

"There's no reason to," he said. "I'm not going to punch you, Doctor. You haven't done anything to deserve it. In fact, it was you that kept me sane the last year. If I didn't have the hope that you would fix everything in the end... I don't know what I would have done. I knew that he hadn't killed you, so I knew everything would work out." He shrugged and sighed. "And if I hadn't come chasing after you, none of this would have happened. So if anyone deserves to get punched, it's probably me."