Hello, I have a groupchat with some friends. We went to the same elementary school and middle school. Recently, I've been removed from the groupchat for unknown reasons suddenly after I nicely greeted one of the participants in the groupchat. I notice that the guy that removed me is being an ass towards me. He probably hate me. It's not just him, one or two of them are being an ass towards me too. So, how to overcome with this feeling/fear?  Thank you