Is it fair of me to be mad at my friend for ditching me over a guy?

Wow that's sucks but its so common unless you dumb friend is going go marry him she shouldn't be ditching you because as soon as she gets mad at him guess who's she gonnas run too? You are tel her it ain't right friends are friends remind her all the things you've done for and with her, if it don't work smack her jk give her her own space and as soon as they fight throw it in her face, or get ur won bf and do the same remember BROS OVER HOEZ. SIS OVER ***** hahaha