From what you said - yes, he should see a therapist. Do not diagnose him with anything - let him see a professional. I would say that he has to get treatment now before entering "the real world". He has symptoms of Narcissistic Personality Disorder that really need to be managed now before things get out of hand.

And, take care of yourself. You deserve better and thus if part of that is to push him away and distance yourself - you deserve to do that.