I cant get over my past , its not fair?

in the past I got humiliated by a black girl at school who I was obviously annoy ! I just wanted to be her friend all year she was nice to me but until the end of the year she was like DONT TALK TO ME this took me by shock because I thought she was a plesant quiet girl and she was giving me evils and trying to pick up on small little things I disgussed with someone about it because I couldnt keep it in and she told ... and it got back to her... and she was starting on me so I quickly stuck up my finger thinking fast and she was like FOK OFF , LEAVE ME ALONE , IM NOT SCARED OF YOU ( good for you like,,,) roaring at the top of her voice infront of the whole school humiliating much ???, I started crying and losing my breath over it never felt so crap in my life worst day ever