My fiancé hit me

I already know what most of you will say but I’m friendless and want to get this out so here it goes:

Last October my fiancé put his hands on me. We were boyfriend/girlfriend at the time. It scarred me badly and we had been together for 4 years and he never did this before. We went to therapy and tried to work it out but i never actually forgave him. I tried but he didn’t seem too sorry and he was always defensive about the situation. Fast forward to January of this year and we got into a heated argument while I was hungover. I said some things that were below the belt and he tried to drag me out of the apartment. He also pinched me really hard. We went back to therapy for one session. We never resolved the issue. Months have gone by, (I haven’t had any issues pertaining to this from him) and I have forgiven him but yesterday we were arguing and he threatened me in question form saying “and what if I throw this fucking phone at you?!?” He has been apologetic now and has gotten better over time, but this comment seems like red flags to me. We have been engaged for 2 weeks and I’m considering calling everything off because it’s too much. I haven’t really told anyone cuz I chose to stay and don’t want to be judged. Lmk what you guys think and ask questions if you want. *Please don’t be rude this is already hard enough.*