He does seem like he has some pshycological problems. or personality problems. maybe they are getting to him right now. i know it is hard to live with and deal with people as i'm one of them, but i think you should ask him to see someone to talk to. did he have a wife or divorced in the first city? does he have kids? maybe there are other things you don't know about him too. I would give him some space if i were you. it sounds like you both liked each other very much, maybe it was too much too soon. give it time.