Im depressed about my relationship! please help!

I love my boyfriend and we have been together for a year and a half. But I feel like the relationship has turned toxic. We are always mad at eachother and constantly fighting. The thing that bothers me the most about my relationship is that my boyfriend says a lot of very mean and hurtful things to me. He always says that he is only joking when I get angry or upset about it. He has pinched the skin around my stomach and told me that I had a big belly but that its ok because he likes chubby girls. I only weighed 110 pounds then. It made me feel terrible I went home and cryed. He jokes about how my vagina is discusting and looks like a clam or smells bad. He has basically called me ugly and gross as a joke and thinks that it is hilarious. He jokes about how I am a whore who wants to sleep with everyone including his friends. He says such mean things. He calls me a baby and a pussy if I say that I am in pain. He has told me that I have pancake tittys. He makes fun of me alot and is not afraid to tell me that I look stupid. I have become very bitter towards him because of this. I have talked to him about it and told him that I do not like it but he does it anyways. In his mind he is only “picking on me”. I do not know if he really means the things that he says or not. I do not know if he really means to hurt me or not. It has gotten to where now when he insults me I just insult him back to try to make him feel the way that he has made me feel. When he is mad or has a bad day he takes it out on me. He will say that I am just like everyone else and do not truely love him which really hurts my feelings. I have lost so much respect for him because he has violated my boundries so many times. He hates my friends and my friends hate him. My friends talk crap about him alot because they think that he is abusive towards me. This is mostly my fault because I confessed to my friends that my bf had been calling me names and picking on me alot. I dont like how my friends trash talk him all the time but if I tell them to stop they just say “well he talks crap about us to”. My boyfriend gets angry at me because of my friends talking about him. He thinks that I should be on his side and not theirs. I dont want to ditch my friends because they are all that I have other than my boyfriend. I do not know if my relationship with him will last much longer. I feel like it is hanging by a thread. I do not know if my bf has truely meant to hurt me with his words or if he is just naive. I honestly cannot think of any reason that a guy would say those things to his girl unless he wanted to hurt her. Jokes are meant to be funny. His jokes are just cruel. I have conflicted views on him and cannot make my mind up if I want to stay with him or not. He has showed he his kind and compassionate side as well. He was there for me when I was in the hosbitle after an overdose. He drives 40 minutes to my house and back every friday to see me. He tells me that he loves me and that I am beautiful. He takes me out alot. He is protective of me. He gives me alot of compliments on my looks and treats me very well alot of the time. I believe that he really does love me. Do you guys think that he says these things to me with the intention of hurting me and tearing me down or do you all think that he is just joking? I dont even trust my own judgement anymore.