Do you have to cross paths with your enemy or "frienemy" ex-friend?

It's these two girls that I have to cross paths with. I thought they were my friend but they betrayed me. Maybe they never was my friend. I strongly dis like them and they might the same about me. I be ready to fight but I know it's not worth it at all. It's so childish I know because we are in our early 20s but I was hurt very bad and it's hard for me to forgive!