The issue as I see it is that 12 to 16 year olds (and perhaps a bit younger depending on when they hit puberty) are in a sort of in-between zone.

They aren't children anymore, there bodies are way too full of hormones and like it or not but they're going to be attracted to anything that discusses or mentions sex because that's all their hormonal little bodies want to think about, and their also going to be attracted to things that make them look more adult, because they so desperately want to be adults. But they aren't quite adults either, so you can't treat them as such.

They're kind of like adults in training.

Honestly I don't think anyone's found the proper way to deal with them yet.