"I don't pick who lives and dies. I just sometimes wish I could." The Doctor turned around, his back to Jack so he could keep an eye on the Master. It was clear who he trusted, whatever else he might feel for both of them. Guilt most of all and first Jack's recounting of the things he'd suffered through and then the Master's tale... Yeah, the guilt wasn't going anywhere.

"...let's go to your room, Master." The 'I'm sorry.' almost came out, but he managed to hold it back. Barely. Too many things to apologize for and no ways of making up for any of it. But he couldn't give up. That's why he'd forgiven the Master, that's why he had brought him with him. He couldn't keep losing everything and everyone. "Do you need new books? Furniture to smash?"