The relationship might be doomed, but you are not a lost cause yourself. I think couples counselling would help you to let go the relationship less painfully if it can't be saved, and if it turns out he has a personality disorder, at least you will know you were just unlucky, and not to blame for what happened. If he refuses couples therapy, then I think individual therapy for you would be a very good idea. Don't give up on yourself, you can learn from this painful experience.