Why does my ex do this?

sopkat23
I have an ex that I dated for two months in 9th grade. We had a very on and off relationship afterwards. He cheated on me and was the one who broke up with me many times. He is friends with my best friend and kissed her once. He told me he loved me a year ago and we kissed but, it didn't feel the same with me so I broke it off and moved on. During my senior year, he made my life miserable. He lied about my virginity telling the whole school I had sex with this kid. He told his friend group that I am a manipulative bitch (so sweet) and that if anyone says my name he will cut them off. When he had a girlfriend they would stalk and amylase my tik toks. Hey said I was actual garbage. Recently, him and his girlfriend broke up. All I said about it was I hope he was okay. We talked yesterday night, he was telling me that I am awful and he hopes I die. I told him that it has been four years now and he really needs to move on. We were talking normally, I told him he deserved better than a girl who cheated on him and that I dont hate him. He also asked me if I hated him and I said no. We were young and stupid. I have also let go of the past and my anger for him. But for some reason he despises me. He can be sweet than he goes and be an asshole again. I was being nice and he just called me awful and disgusting. Why isn't he over it? Why can't he let go when I didn't even do anything to him? I cared and loved him but, it just didn't work out. Can someone please explain to me how this guy is so torn up from something that happened four years ago.
Updates
1 y
Just to clarify about the cheating thing, He went camping and he flirted with this random girl while snapping me that he misses me and then when we broke up his friend told me that he left me for that girl because he was in love with her (she did not feel the same way). It is a shitty thing but, I viewed it as cheating some people wouldn't
Why does my ex do this?
4 Opinion