I lost my best friend because of a nerd

I never thought I would lose my friend because of her own greed, she is always cheating on tests, because of the nerd (yes, she gives her the answers) but little does my ex best friend know that the nerd thinks she is extremely stupid and fucking backrest, When it's for other things, this nerd excludes her, and I think that's well done, little does the nerd know that she's always said bad things about her, anyway, I'm going to stay away, which is the best thing I can do.