My friend s in danger of being taken and raped should i tell her what happend to me?

My friend has been talking to this fresh men in high school over text pluse on her ipod and he lives in a different state 4 states over, so he clames. He asked her what her bra size is, and said if you don't watch my favorit movie I will get on a plain and come fined you. And my friend said ok I won't watch it so you can come see me. I have been in the sme position on the same site, I told her how I feel about this guy and sh won't listen I think this guy is much older and I think he could be dangores what should I do???