Should i stay with my boyfriend?

My boyfriend and I have been together for a year. He is my first boyfriend. Therefor he is my first everything. From the start our realtionship has been rockey. He cheated on me four times in the course of our realtionship. The last time being two weeks ago. This for me was the final straw. The weekend he cheated on me he ignored me and treated me like **** but told me to trust him while he went to a rave with his friends. He ended up kissing this girl who he later told me he has liked for the past month. He says that he still loves me and wants to be with me but i dont know how much i can take. If you guys have any advice it would be really helpful. However if possible you all can give me both sides like to stay and then to leave.