Relationship problem

Okay so I was mad at my boyfriend and everytime I'm mad he never leaves me alone . He blows up my phone constantly & pops up. Today he popped up out of no where and dragged me away from my friends. Then he was getting me so mad because he took my phone and wasnt giving it back & also he kept pushing me and pulling me so I slapped him and he got so mad and grabbed me. I started crying he kept saying why tf am I crying stop crying before people come . My arm really hurts also he forced me into his house today and he tried touching me sexually but I wasn't feeling it. He kept trying and I told him to stop and he got mad. Then he said we are going to have sex I kept telling him to stop I don't want it and he did not stop he kept because he felt like I wanted it because I was " wet " . Also when he upset he comes at other people for no reason and blames me for getting him upset. Smh I want to leave but I don't want to . We been together for two years .