DearSugar and Betrayed Betsy need your help. She broke up with her boyfriend of almost two years and only a few weeks later, he started hooking up with her best friend. Where does she go from here? If you have any advice for her, she'd love to hear it.

My ex boyfriend of almost two years and I have been broken up for a month and I just found out that two weeks after we split, he and my best friend of 10 years started hooking up. They apparently now feel very strongly for each other and want to be together. She did not even confess to me, I caught them, and she is still lying about how many times they hooked up and when. I am so incredibly hurt and angry and I just don't know what to do. Should I throw away 10 years of friendship with someone I always considered my most trusted confidant? I honestly don't think I can ever forgive her for backstabbing me like this and now everyday I wonder if they are together and what they're doing. I've put my ex behind me, realizing now that I made the right decision by breaking up with him, but no matter how much I want to hate my best friend, I can't help but feel sad because I miss her friendship. I don't know how to get over my anger. Do you have any advice?

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