I dont know what to do...

torriebear • bunny 🐰💖. NSULA 🤟🏾💜📚. BLM ✊🏾
So my boy best friend (who is also my ex boyfriend) and I were talking like usual. I told him about Mike, a boy I talked to for a few days before he got a girlfriend, and he thought that I cheated on him while we we're together even though that has never been the case for me at all. I find it very hard to talk to him right now. I need advice.