Girfriend doesn't like the way I treat my dad
I pretty much have zero contatc with my dad. He cheated on my mom multiple times and emotionally and mentally abused me. I could never do anything right hen I was younger. He would call me stupid or dumb and would even tell people I was gay(though I'm not).
My girlfriend knows all this and understand I have some resentment towards him. Now that I have gotten o;der and have moved out the past couple years he has tried being nicer to me. I blow it off though. Sometimes I feel bad, but then I think how he acted towards me and I then don;t care. My girlfriend said I act like an asshole towards him and I should forgive him. I told her he should have though of this when I was younger
what should i do? should i forgive him?