"And here I thought you were just hugging me because of my incredible magnetism."

He's laughing, and he's staring at her, because he can't help it. He owes so much to her, and she'd been one of two people who'd been everything to him before everything had turned so suddenly to the worse on the Game Station. And now, he's missed her for so long, thought that he'd never see her again, that he just can't stop looking at her.

"How have you been, Rose?"

The Doctor had said this wasn't possible. Unless this is Rose from a point in her timeline before that happened. And maybe it is, because she doesn't seem as shocked to see him as he is to see her.

She'd better be from before she got stranded, because if she isn't, that's really bad news.

(But if it's really bad news, at least it's bad news with Rose here.)