I don't want to forgive my former friend.
What is your reason for not wanting to forgive your friend?
I'm bored of them. Her behavior is absolutely insane to me.
Everyone acts up sometimes so maybe you can forgive your friend. It will be bad for you to hold a grudge for a very long time.
I'm too smart to be around someone like her.
Well holding onto hate is something that affects you more than the person you have hate for. This negativity is something that weighs you down and puts your mood down. So in a way, you forgiving the person is ultimately more for yourself.