Boy at my school Dance ... Extremely MAD?

Okay, that boy has some major issues! He sounds very immature, and perverted. You did nothing wrong, I would have done the same thing. But what you should probably do is tell one of the teachers there what happened. Did your friend even try to stop him from doing it? If not, she's really stupid for not saying anything to him (no offence) People these days don't seem to care anymore, and just do whatever the heck they want. But, I would go tell a teacher. :) Hope you have a good day, and I hope this helped. :)