"In contrast, boys' sexuality and sexual behavior is generally accepted," Brady and Halpern-Felsher pointed out. "Parents can play an important role in helping to eliminate this double standard by encouraging respect for women and discouraging the use of derogatory sexual terms."
How about just "discouraging" the sexual activity in the first place?!?!?
The girls father, too, alas is a major player in this arena as well.
From my experience, they are generally no shows.