Advice????

Sarah
Basically, I broke up with my boyfriend and three days later, I hooked up (not sex) with one of his and my good mates and one of my good friends really liked him and now she won't talk to me.
But at the time I was sad and confused and vanruble and breaking inside so basically I hooked up with him because I was vulnerable and wanted o feel needed but he started it and I don't know how to get her to talk to me and understand what happened. And my ex was crying because apparently he still cares about me but he broke up with me both times (we dated, broke up, got back together, broke up) and I told him I gave up and basically no one is really helping me or talking to me and now and I'm confused and upset and basically can anyone help me please????