Best Friend Stabs me in the back, Sleeping with my first love w/in a month of breakup
Ok, So I am new here. Basically, I need help. My ex-boyfriend and I finally cut the cord back in Jan. So, he and I had this big fight (we decided to stay friends after the break-up) and he wanted nothing to do with me because he felt like I wasn't talking to him and all. Well, that lasted for about 3 days then he came back and was like sorry and all that jazz. I had left for NC the day after he apologized, and came back 2 days later. I headed over to my best friends house, in which my ex and her had just "hung out" and they both told me that the day they did since she and I were going to see a movie and well, I was in NC. But I knew something was up when I saw they had been txting all day. So, I asked her point blank if anything was up. Earlier that week, during his and mine fight, I was telling her how much I loved him and all and she told me she wouldn't want anything to do with him and how I deserve better. Well, within in 2 hours of me leaving, he came over, and SHE SLEPT WITH HIM. 2 hours after her telling me all that. Then, again on his birthday with me in the house suffering "almost dieng" ( I had a little much to drink). So, At this point. I am at a lost on what to do. I confronted her on me knowing and she blamed me. Telling me it was none of my business. My ex and I talk and he tells me all the crap she says about me and he was the one who told me.
What should I do?