He might be. Keep trusting what you feel is right, and don't let his opinions of what you are going through or not affect your recovery.

I don't know why a significant other would want to be in denial about their partner, but maybe what you say is right that he feels he has failed in helping you (which would be an unrealistic expectation)....or he just doesn't want to admit you need the help you say you do. Maybe he sees something of himself in you, and doesn't want to admit he may need help too. (I don't know situation, just guessing)