All my life I never had a long lasting friendship. I lost many because of minor inconveniences on their side and in the end I am always alone.

In the last year I made a new friend (dumb Idea I know). I made three actually. But then one of those said cruel words to me and even threatened to punch me. Because of that I don't want to have anything to do with her. One of the other two friends stood by her side. I accept that I am completely okay with that but the last one said she would stay by my side and that she thinks that the first one did mean things. 

Then she started to talk less to me and more with her. Today she sat in the classroom next to her and not to me so that I was all alone. I just feel so hurt. She didn't even talked to me all day. 

Am I overreacting? Am I allowed to don't like the first person because she was mean? Am I really destined to be alone forever? I honestly really need someone to write with me but I have no one.