Venting .. Long long paragraph..

Me and my bf have been having so many issues lately.. I literally cry every time. He gets so mad at me when I don't tell him when guys request to follow me on social media. He gets mad over a lot of things and sometimes it makes me want to get out of the relationship.. Today I was supposed to babysit my 14 year old cousin and she's the type of girl who likes to smoke and talk to a lot of guys but she knows I'm faithful to my bf and she respects that and well today I had told my bf I was going to babysit her and he got mad and said he doesn't want me around my "Hoe" cousin.. He didn't let me spend the night with her to babysit while my aunt was gone and if I did he would make me feel like shit. Then I started crying and he hugged me and said that she's a bad influence and that she will convince me to do bad stuff.. I really need someone to talk to at this point because I've been crying non stop. He gets mad at me over everything and everything is always my fault.. My mom gets so mad at me.. He talks about getting pregnant and moving in and marriage and he even gave me a promise ring but he says he can't trust me and so I told him " don't talk to me about marriage, babies & moving in if you can't trust me" . I love him, I really do but he's been so controlling and I'm so over it. I just want him to understand and no matter how much I talk to him he doesn't listen .. I'm berry sorry this was long..