I dont know weather to finish my boyfriend?

well I was with him for a month, it was going off so well until then he started getting a anger on him, and he hurt my feelings so much! he told me to f**k myself I was hurt badly and we went to meet each other to sort things out, but when I met him all his mates came as well and he read all the texts I sent him out to everyone messed me around saying he didn't say things which he did which made me think i was going crazy!! Once he said he fell off the roof and lost his memory ? and he didn't. then we broke up because well him and his mate fell out, because apperntly his mate called me a fat ugly slag, then I text his mate saying how come you called me that ? Then he said he didn't your boyfriend did, and I dint no who to believe then they fell out, then my boyfriend didn't want relationship anymore because of it, he blamed it all on me and said its all my fault and if he loved me he would of stood by me! we stopped messaging each other for a few days, then he said to me he still loves me and I still loved him then I messaged him saying can we get back together, he said we can but then he came to my house with a few friends, and said he cant remember us getting back together he said his mate had his phone! he has messed me up big time! but he says he loves me and wants a relationship but when he was about to left his friend says lets go watch ( my boyfriend ) graft with that girl again! and he shouted yeah. I am in bits! HELP ME!