So some of this is in a TIFU as well, but I'd figured I'd ask here.

Pretty much here is the whole situation; We have been together for 4 months now. During these months, we have been up and down. I have had sex chats, she has cheated. I want to be hers and hers alone, she has "obsessions" with other guys and not me. It's been really frustating. However, there is a sweetheart I really fell in love with. I know that girl is there and I want that girl I know. Not the drama filled whore I'm all too familiar with now. I have spent a lot of time, effort, and tears trying to get this relationship to work. This is a girl that has been by my side when I was near death, and when I had hurt my leg she dropped everything just to be with me. Do I think she has issues? yes. Do I think I have issues? yes. Everyone has issues, I'm just trying to do what I can to remove the toxicity from this relationship.

Situation: My roommate, one of her friends and "obsessions" finally lost it, assaulted and illegally evicted me this past weekend. I'm trying to talk to her and explain why that someone that does that should not be in her life, and I do not want to date her if she thinks that is okay. She says that I am being controlling when I ask of this. I'd really think I'm not being controlling and just being reasonable. What can I say or do to kind of tell her that's really fucked up. Am I in the right here? Or am I really just being controlling?

Any advice is appreciated, thanks

-SomeRandomHeartbrokenUSer

tl;dr: Girlfriend's friend and my roomate hits me, don't want either of us around him, she thinks that's controlling