So my mom has thia new boyfriend who she knew way back when she was in HS and he doesn't like my dad…

So my mom has thia new boyfriend who she knew way back when she was in HS and he doesn't like my dad because my dad tried to mess with his wife back then also. My mom is 51 and she's finally happy. But I want nothing to do with this man. He's tried telling MY mother that MY father can't come around our house. Uhmm thats MY father! The father of your girlfriends 2 daughters! You have no right to say who can come around OUR house when you dont live with us and havent bothered to meet us yet. He broke up with my mom because she didn't answer the phone when she was taking ME and her GRANDSON to the Drs. Really?! That's bullshit. He gets mad at her when she has to work too! He's too demanding and I do not like that! He's even had my mom sleep at his house before meeting us! We should have been the first people to meet including my older brother who I know will give this man hell. We all will. We don't know how to greet a man nicely because all my dad and my brothers dad has done was hurt our mother. I have no intentions on meeting this man ever. Even if they get married nope. He is not welcomed by me. And he will not be around my children. The way my mom treats my dads girlfriend I'm going to treat her boyfriend. After all the help my dad has also done too with money and cars she says his girlfriend is not allowed around MY kids or our house. Well sorry mom neither is your psycho boyfriend.