No joke, she made moves on my boyfriend, and I was standing RIGHT THERE. Help?

I think you and your boyfriend should both talk to her but seperately. Tell her that she did cross the line at the dance and that she was making your boyfriend feel uncomfortable and she was being intrusive, whether she realises it or not! I would then ask your boyfriend to talk to her and tell her that he isn't interested and that he loves you, so she needs to stop the way she is acting. Good luck xx