Daddy issues

So long story, my dad hasn’t really been in my life. I’m 23 now and I have a lot of anger towards him. I’ve tried time and time again to have a relationship with him but he’s a compulsive liar and refuses to take any responsibility for the things he’s done and pain he’s caused. We were okay with each other as of late until I found out my great aunt had died and he didn’t tell me for 7 DAYS AFTER. Another family member told me and I was livid. He knew how much she mattered to me and he didn’t bother to tell me. He didn’t even like her and he told me when she was younger what a slut she used to be which totally offended me. When I asked him, “why the fuck didn’t you tell me she died?” His response was, “Maybe if you would keep in touch with the other part of your family you would know you inconsiderate little bitch.” I told him whatever relationship we had is over and I’m blocking him out of my life.

My aunt’s funeral was the very next day and of course my father didn’t go. I asked my grandpa (his dad) what is going on with him and apparently him and my cousin had to go to my dad’s the night before to calm him down. He had all his guns out so they took his guns from him and he started drinking again (my dad is an alcoholic) and he thinks his children hate him. I don’t hate my father, I just hate the things he’s done.

I’m scared he’s going to kill himself and I feel like it’s all my fault. I don’t know what to do. I don’t want to talk to him but I also don’t want the next funeral I go to to be his.