He gave her his signature lopsided grin. Though she wouldn't really know it was signature since he was just getting to know her. Whatever, the point was she got it. It looked rather like a child who'd been caught stealing cookies out of a giant cookie jar. He shrugged a bit. "Eat well enough." Of course it wasn't entirely true, but he was also an alien. He could go quite a bit longer without food than the average human could attempt. Still he generally was okay at it. Unless Rose was concerned. Then he typically seemed so focused on her that he didn't notice much else. Except this time. This time there were so many people living on his ship, he had no choice but to notice.
It was strange. He could have just kicked them off and told them all to bugger off, but he didn't. He didn't feel a need to send them away. Likely had a lot to do with Rose. He knew she loved them so he was giving them all a chance. Not only that, some of them were okay. Martha he could deal with. The boyfriends made him grumpy and twitch, but the doctor at his side seemed nice enough.
He'd grown to accept that she lived on his ship, and he wasn't the only one who called her home. It helped that the TARDIS seemed to approve of them, so that softened his view a bit. He shrugged at her question as though it were no big deal, but deep down he hated everything that'd happened. "She was my responsibility you know, whether she knew what she was doing or not."
He remembered that unfortunate chat he'd had with Jackie Tyler about her only daughters safety. He took it to heart too, as much as he said he didn't want to bother with domestics. "You humans.." He shook his head with a fond little chuckle. "You're something else you know that right?"