HELP ME PLEASE DATING/BEST FRIEND ISSUE?

Okay I like this boy named Edgar and we text and talk at school.He is a senior and I am a freshman. Yeah okay dont judge me t is just four years!!!!And then there is a boy named Jon Michael. He flirts with me soooooo much. And I hate it he is cute and everything but not really my type. Okay now my best friend Angelica loves Jon Michel. And everytime he pulls my hair or follows me she is just watching and it is sooo annoying!So today she wrote me a note and it cuzzed me out and she said she cant be my friend anymore. We have been friends since 1st grade and this is the first fight . What do I do?What do I tell her? I still want to be her friend but HOW!!!PLEASE HELP ME