It'll be a good test of his ability to fool people if he can convince her. Not that there's much reason for her to suspect him of trying to deceive anyone.

He nods, picking at the edge of the pillows, brow furrowed as he tries to work up to what's eating at him.

"...I did things in that world...things I'd never do. And I- I don't how to--" he breaks of, gesturing vaguely, "...I dunno...what if that's really inside of me?"