Brother dating best friend?

Well it happened to me in a different way. My best friend is "dating"(air qoutes because she can't date but they like each other) my other friend and i feel lile the third wheele when i am around them and i have been getting a bad vibe about the guy as if he wants me out of the picture. I think that you should wave the white flag and try to make everything ok again. Try to be best friends with her again and be a happy family again. Just try to think of what they think. They might think that you don't want them to be happy and i know that you want them to be happy even if it causes you pain. Love hurts even if it is not your love. Just try your hardest to make everythink ok again