Relationship advice … long rant

I’m currently in a relationship with my kid’s father who I’ve been with for over 8 years. We have a 4 year old and lately things have been so rocky… I need advice.

He has cheated on me when I was pregnant I didn’t find out until my daughter was 3, after that happened once time he glanced his phone and I saw he had a msg with a girl on fb and after I insisted on him showing me the msg I saw that he basically said “how have you been beautiful”. Months after that again accidentally I found out that he bought nude videos from a girl from the same city we live in. After all that I forgave him, then he started cussing at me, screaming at me one time he even curse me in spanish using a really big word. It came to the point that slowly I was checking out mentally little by little, then I started accepting friend request because I had made my decision on leaving him. Once I finally had the talk with him, that same night he went to the hospital and found out he was diabetic, I felt petty not going to lie so I decided to stay with him. Well anyways it’s been like a month since we decided to give it a chance and we now argue more than we ever did, he found out about the friend request that I accepted and he wants to say that because of me the relationship isn’t working out. He expects me to delete every single guy I have on social media, when he did everything he did I did not check anything that had to do with his phone nor his social medias and he has just been making me feel guilty so I’m wondering is it really my fault that I messed up the whole relationship to the point that breaking up feels like the best decision…? TIA