She hit me 22M 22F

Hey I am 22M and she was 22F we had a problematic relationship dor the last 7 months and in my birthday we had a fighr and she hit me, this happened 2 weeks ago, I did everything she wants I tried my best to become the man she wants and she did this. Later on I said I want to end things between us, but she cried and promised me she will be better and I told her I need some time alone. I cant get over that she hit me I dont know what do,I lover her but I cant be with a abuser (I get beaten up frequently in my childhood and she knows that). How can I break up?