Authors and prudish Americans at large, you are NOT doing teenage girls any favors by holding up only the chaste young women as the role models. You are indirectly (and sometimes directly) suggesting that all sexual feelings are to be suppressed and are something to be ashamed of, and that a "good" girl doesn't go beyond kissing AT ALL until after marriage. (I suppose you say the same to boys, but with much less force, because hey, boys do what they're going to do, right?) You are only giving our young women complexes, far more than you're giving them valuable role models. They're going to have those feelings whether you discourage them or not.
All I can do is rant occasionally, and of course write my own books in which teens find healthy and relatively safe ways to enjoy each other sans clothing. Which I shall keep doing. So there.