<human>: Can you succinctly summarize the text in 1-3 sentences?

I live in a house with 5 other guys and we hang with a group of girls a lot at our house, one of which I used to hook up with. My girlfriend doesn't like that she has to see someone I used to have sex with whenever she wants to see me (as she only comes on the weekends, and that's when this other girl is around). I've tried going to her instead of her coming to me, but she doesn't like that because we can't sleep together, as she lives with her parents. I've pretty much cut that other girl from my life also, I barely speak to her besides a passing "hello". I can't force her to not come over, as all my housemates are friends with her. WHAT DO I DO? I need maybe something to say to my girlfriend? She said she might break up with me because this makes her more sad than i make her happy.
<bot>: Girl I used to doink hangs around the house and my girl doesn't like it, threatens to break up with me over it. Cant find a solution!