So this girl and her boyfriend have been friends with my boyfriend and me for years now. Our boyfriends have been best friends for 10+ years. This girl at the time started dating him shortly after her best friend dated him. That took a toll on their friendship and didn't speak for a while. Then become best friends again and were always with each other. I hated it because I was such a good friend and she never treated me the way she did with this girl. Well, they all of a sudden stop contacting don't like each other. We’re all wondering why because we would all hang out. The girl told us it's because she started hanging out with this girl she used to be best friends with. At first, I didn’t think of any of it. Until she started treating her boyfriend like crap and just acting like she wasn’t interested in him and interested in this girl. We dig a little deeper and come to find out she told everyone she's bisexual. I don't judge. But what I do judge is that she's having a man pay her bills and is in a relationship with him. But is obviously into this girl. One night they come over and she's treating him like crap and just affectionate to this girl. They get drunk and admit they have tried to have sex with each other and with the guy. And I'm looking at him like why don't you leave her? Because she doesn't want you. But it's not my relationship. She gets even drunker. Tries to start stuff with my relationship and starts stuff with her relationship. I get pissed off and she can tell. She acts like she doesn’t know what she just did and the next day when she was sober I told her what all happened and she said he treats her like crap and I never noticed. I only noticed what happened in our own house. And she wants her best friend but won’t break up with her boyfriend.