There was always a look of sadness to Jack's eyes when the Doctor talked about him like that. He hated being reminded that to the Doctor he was little more than a walking, talking problem that he couldn't fix. He shook his head and stepped close to the Doctor, placing a hand on his shoulders and giving him a smile. "I'm glad you're not alone, too." His voice was soft with a note of understanding.

"You're too manic to be left by yourself, you know. But if you need anything... someone to talk to, if you want me on the opposite end of the TARDIS for a while... I can do that. I just need you to talk to me about it. I can't read minds. I don't know what's going on in your head, and while I'm not... scared about it, exactly..." his smile faded, replaced with a concerned look. "It's troubling. I want to make sure you're okay. It's been hard, I know."