You seem pretty brainy, and I've observed that women are sometimes competitive with each other and don't want to be around other women who make them feel dumb. My guess is your "friends" get jealous over time because you show an interest in a wide range of subjects, showing your intelligence/independence and breaking stereotypes. And women get really jealous if you are smart and have a decent figure. I can let you know if that is the case -- just post some topless photos of yourself on the web and then give us the link here. I'll peruse them and get back to you.