<human>: Could you distill the essence of the text into 1-3 sentences?

My ex (25F) of 2 1/2 years broke up recently and I've been having a hard time with it.  Even more difficult is that my two roommates whom I introduced to her are still really good friends with her.  One of them in particular still talks with her regularly and despite them saying they don't talk about me I don't really believe it (she always knows when i've been with my ex, she slips up and lets out little details that I had told my ex and no one else).  Then the other day they were invited to a dinner party at my exes house that i obviously was not invited to.  They knew I was upset about it but still went anyway leaving me home alone by myself, which personally I just thought was a shitty thing to do to a friend.  I'm really struggling with them remaining such close friends with her while I'm trying to move on.  I feel like they are providing my ex with this one-sided mirror view into my life that I don't have with her and I feel like I can't be myself in my own home.  I've brought it up that it makes me uncomfortable and they tend to get really defensive.  I even got into a yelling match with one of them the other night because she convinced me to go hang out at a bar with our friends and just didn't tell me all my exes friends were going to be there too.  Obviously I had a shitty night and left and when I told her how mad I was about it she came home screaming at me.  Obviously it's putting a huge strain on our friendship and my living situation.  I don't want to tell them not to be friends with her anymore because it just seems like a shitty thing to do, to tell people they can't be friends with someone, but it is making me really uncomfortable in my own home.  Any advice?
<bot>: my roommates are still close friends with my ex and it's putting a strain on our friendship/living arraingment