Hi pinkpeach. welcome to Psych Central. I am sorry you are receiving treatment from your BF that seems abusive. Even if he has suffered trauma he does not have to take it out on you.

These articles may be of interest
Narcissists Use Trauma Bonding and Intermittent Reinforcement To Get You Addicted To Them: Why Abuse Survivors Stay

The Differences Between Abusers with Narcissistic Personality Disorder vs. Borderline Personality Disorder

Even if someone has suffered severe trauma that does not mean we have to take anything they throw at us. Maybe setting boundaries is important. Like not taking their phone calls or acting serious with them. I am glad you have a therapist to help you find solid ground. Remember no one deserves to be abused verbally, physically or emotionally.

Hope you get the support you are looking for.