boyfriends parents

Hi ladies I would love your opinions on what to do with this situation. So I live with my boyfriend and his parents. His father is a drunk and his mom is an enabler and drink occasionally. His father is a really mean drunk and likes to talk shit and hit his wife sometimes and they both feed into each others negative energy and play games. I've been living with them for a year pretty much(in may) and my mental state from being here has gotten worse. His father is a trigger for me and I do not do well in this house. I don't know how he has lived 18 years of continuous trying to keep his parents together and from killing themselves and a whole lotta bullshit you shouldn't put on your child. I don't want to live here anymore. The past two months has been nothing but bullshit and crying and just nothing good. I need to get out of here but I love my man to death and don't want to leave him of make him feel stranded with no one to help him. How do I bring up that I can't live in this house anymore? I don't want to hurt him and I want to stay with him but I can't do that if I stay in this house much longer. Please no hate I just ask for advise and opinions on what you would do with this situation