My DD is still very young so I have no experience from a parents perspective here at all, but since it hasn't been that long since I was 15, I can comment on that. I don't know how a parent should deal with this (i'm dreading having to find out!) but I think it's really important that you do SOMETHING. My mother let me date whoever I wanted and was very lenient, and although I appreciated it at the time, it did me no good. Good luck!