As a friend, I am concerned mainly with the happiness of my friends. If that happiness includes dating someone I don’t like, or approve of, that’s just too bad for me. I’m not about to go meddling around in their relationships just because i think that its going to turn out bad. Sure I want to prevent them pain, but not at the cost of said friendship. Sometimes people have to make the mistakes to learn from them. I’d rather have my friends learn the lesson than repeat it endlessly because I kept poking my nose where it didn’t belong.