Oh, Olive!
If you knew how similar our story is!
I also moved from my state to stay with him. My boyfriend is having little to no patience and bad temper. He is not hitting me or calling me names but he gets agitated when angry. He volume up his voice as well.
I am still concerned myself about this anger issues. He realizes that he is overreacting — FORTUNATELY! And finally apologize when he realizes he has gone too far for the situation.

I used to get pissed when he was getting angry but not anymore. His negativity isn't mine. That is HIS. Surprisingly, I stay calm and just do not even look at him. I just continue doing my stuff and focus on things I enjoy instead. I am breathing. I mentioned he has anger issues but he doesn't think he needs to see someone. I promise myself that someday, if it doesn't change and cannot deal with this anymore (because let's be honest; I don't want that in 5 years ; or raising kids in this atmosphere). His negativity. Not mine. Certainly not my future children either.