<human>: Can you give me the gist of the text in a nutshell?

Backstory: My parents got divorced when I was 10, I have never really liked my dad. He always yelled and apparently abused me when I was a baby, but I'm not going to completely believe that as I have no solid evidence except for my mother's word. He also always threatened my 3 siblings and I when we were younger and I was completely terrified of him. He yelled at my mom a lot as well, but I might've been too young to understand the whole situation there. All I know is that I absolutely hated it.

I stopped going over to his house and stay exclusively at my mom's.

About 2 years ago he went through therapy and he is admittedly better. I do like him better now than then, but I still can't forget some of the things he has done and I feel extremely uncomfortable around him. He is always texting me huge walls about how he "doesn't know" why I won't go over anymore and how it "isn't fair" that my family gets to hangout with my SO and he doesn't (even though he has a history of making me extremely uncomfortable around women because of his crude comments). He also says I am being fed lies by my mother, even though I don't take what she says as law because I want to live by what I know.

The problem is him trying to talk to me about why I don't see him anymore. Anything I tell him would just be about him in the past and it's not really solid and it makes me feel like an awful person because maybe he is a little better now. I just need to know what I'm supposed to tell him because I don't want to see him again because of the countless terrible things he has done **in the past**. I know it isn't fair but I don't want to see/talk to him anymore.
<bot>: Father has an abusive history, I don't want to see/talk to him anymore but don't think I have a fair way to do it.