I messed up!!!!

So I met this guy and things were good at first then we took things to the next level and became a couple. Well it had been two months before we made it official and he breaks down and tells me that he had a girlfriend and that she left him because he cheated with me. Now that she's gone he treats me like shyt and no matter how many times I try to leave him he comes up with reasons why he likes me and wants to make it work. So today he tells me that i have to leave our apt so that she can come over smh. I'm so coo on this bs as soon as I get my paid next week I'm out of here. He can pay these bills on his own. Wat do y'all think am i trippin?