I [33F] tried breaking up with my boyfriend [33M] in person yesterday and he turned on me. I still haven’t left him

I’m kind of in shock right now. I decided yesterday to end my 9 month relationship...we have been arguing constantly recently and it was turning toxic. It had got to the point where my bf said his mom has overheard our arguments and he said she thinks I treat him like ****. (Im not sure if this is entirely true as his mom has always been absolutely lovely to me) Regardless i was so mortified to hear that, embarrassed and ashamed, so I said that is a prime example of why we shouldn’t be together. He said it didn’t matter what anyone else thinks and he wanted to work through things. In my mind though things had gone too far and we needed to split.
I told him in person yesterday when I was at his house that we needed to break up , that the arguing was too much and it wasn’t good for either of us . Id brought his belongings that he’d left at mine and I tried to be as nice as possible. He turned on me and said “no way, you’re not doing this to me you ****ing idiot. How dare you come round here with the intention of breaking up? Are you mental? Are you sick in the head?†He called me the most disgusting names.
I said I needed to leave and I was sorry but he locked the front door and wouldn’t let me go. It was only us two in the house at the time. I begged for him to let me leave and he wouldn’t. Instead he started to interrogate me about the reasons I wanted to leave. Kept wanting to know if I’d met someone else and was I leaving him for another guy. I couldn’t get to my cell phone as it was in my purse out of reach so I couldn’t call anyone for help. Then he changed tactic and said we can work things out, backtracked on the thing he said about his mom, said he loved me and didn’t want to break up. In order to keep myself safe I kept him sweet and I agreed to stay together; he had calmed right down by then and I felt relieved.
Long story short I’m still with him. He said he wants to come to see me later and make things up to me. He said he will buy us takeout and we will have a nice evening together. I don’t know why he is so intent on wanting to stay in such an awful relationship. He tells me I’m a complete pain in the ass all the time and how he’s had enough of me so why the hell wont he just let me go.
TDLR: tried to break up with my boyfriend but he turned nasty


Source.