How can I handle this? How should I react?

Beat her to the punch, tell her off in public. "You are just jealous i am a virgin and you're not. I plan to wait till marriage, when you did it like the wrong person you are when you are a junior. You are a good dancer, but we just need people who can pick it up FAST. no need to cuss me out like you did just because you aren't good enough!!" and make sure others hear it, so then rumors will go around you are a virgin. O_o