No, you're always the real one. Even when all the other ones are just as real as well. Just because one is 'proper' doesn't mean that the rest are immediately invalidated.

( She's not bothered by the complexity or the fact of the matter that it's a lot to wrap one's head around. )

Well, if another version of me came from another universe, I think I'd be more interested in talking with her about the similarities and differences in quantum theory and just about everything else there is. Um, not to say that that wouldn't be a possibility. But it just doesn't seem probable.