My former best friend don't want to talk to me. How can I convince him to talk to me?

My best friend stopped talking to me after he heard from my former girl friends (they were two-faced) that I talk about how he treats me. He didn't even tries to talk to me or understand what happened or why. He only told me after I text him that I'm two faced and I gossiped about him. But truth is that everything I vent to them I talked to him first and he didn't want to do anything about it. I talked to people I thought were my supposed friends and try to get advice what to do and they wanted for me to be distracted and to failed on exams. I passed the exams but my former best friend started to befriended my former friends. Do you think it was excuse or he really thought I did this on perposue to destroy him?

My former best friend don't want to talk to me. How can I convince him to talk to me?
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