You didn't do anything wrong. You'll need to get used to this new side of the relationship.
I really have no idea. I don't know much about it, but you can't expect for people to know what to tell you when they don't know if he is having an episode or just being himself. If it is meant to be, it will be. My guess is his personality disorder ( or whatever ) will get in the way of a relationship. You won't be able to relate to him the way you want and you won't be happy.