They seem to attract guys. Are you sure they really do? You are basing your insecurity on their stories. Stories are usually exaggerated. They might not have any more dates than you do.
You can’t compare your dating experience to other people’s experiences. Everyone is different: we all attract different kinds of people at different times and in different ways. It’s like comparing apples to broccoli. Even if your sorority sisters are dating more than you, so what? Everyone has their time. I remember college dating being spotty, anyway. I’d have four or five dates in a month with different girls, then go months with no interest from anyone. College is the biggest dating pool you’ll ever tackle. The competition for dates will never be more fierce than it is right now.
My advice: cut yourself a break and stop comparing yourself to others. Relax and enjoy your friends and your studies and the college experience. The dates will come, trust me. Usually when we’re not looking for them.
Thanks for the question.