What advice would you give someone who just realized that their best friend isn't who they claim to be?

first off, the only soul you are supposed to love more than yourself is God. From the story it seems as if your "friend" isnt that, if i were you i would leave her alone. Im a sophmore in college now and there were 3 bfs ive had all da way up to high school now only 1 is still in my life, i let the other ones go bcz they had changed on me and werent honest.