Is he willing to get into Therapy and start working on the problems he is having?

Personally if a person wasn't willing to work hard to resolve stuff that has a direct effect on the relationship.. Then I would bow out and move on..

Loving someone doesn't guarantee that a relationship is healthy and means you should stay.

Have you talked about the tough stuff .. Do you want children? If so he also wanting one or more ?

If his outburst are causing you to feel suicidal , Well that is very serious. What does your Therapist have to say about his actions triggering thoughts of suicide in you?

You have many red flags in this relationship.. If you had a friend in this kind of situation what would you tell he/she?