So, I was friends with my very best friend since freshman year of high school... we were super close, and always did everything together.
Then I got a boyfriend.
It didn't seem like a huge problem at first, but then things between us started changing. My boyfriend at the time (now SO) and I got an apartment, moved in together. We were getting closer and more serious. She was stuck at home, with her parents. We invited her to live with us.
Things were fine for about a year.
Second year passes and she moves out, giving us no advance notice.
Well, then my birthday comes and I go out to a bar to hang out with her. She drops a bombshell on me. My SO cheated on me with her. Terrible, right? We broke up. Everything we had together, done. I was upset. I didn't even think my best friend could lie to me.
Well, she did.
Time went by. I didn't want an explanation from him. I just wanted to be alone. Her story started changing. She confessed. It was all a lie. I was crushed. Lost my best friend and my boyfriend. Well, my boyfriend forgave me. (Which I really didn't deserve for being so hot headed) and we got back together soon after.
My best friend wouldn't acknowledge she'd done anything wrong. She thought he was 'wrong for me' anyway, so what was the harm? We stopped being friends.
Fast forward to now.
My SO and I are solid. He doesn't like her. I don't blame him. She's been trying to revive the friendship, but still won't even acknowledge she was wrong. I don't know what to do. When she needs me my first instinct is to be there, because that's what best friends do but I was betrayed and it's so different now. So when I feel like being there I also feel like I'm betraying my SO.
What would you do? I am at a loss. Mostly I just don't think I can be her friend again, but that feels so cold to me. I just don't know.
She used the fact that 'she' joked about us having threesomes as reason for him to come on to her, and subsequently cheat on me.
Then she confessed that she was kind of bisexual, and kind of had feelings for me and just wanted to be with me. I get that she is confused, but it's just such a huge betrayal.