There's all types of friends. Good friends, bad friends, friends that are your family, true friends, and untrue friends. Make yourself count by valuing yourself before determining who's worth your time, emotion, and trust. 

If it ain't fixed, it's broken. It doesn't mean you have to break yourself to fix someone else's issues. 'You can't make a bad movie good' is what my film professor said. Get out while you can!