Few, in any case, are innocent' in the way the culture likes to think. God knows, I wasn't. Like most teenagers, male and female, I was obsessed with sex for years before I actually had it, and so were all of my friends, without exception. It was adults who were thought to need protection against them. The truth is that sex, at any age, is not about power or pleasure, but about power and pleasure and many things besides.
Sex is nature itself, no matter who's involved in it.
That children need protecting is not in dispute. That young men and women need some means of sexual expression is also not in dispute, or shouldn't be, and sometimes sex with an older adult is exactly what's called for. In my own case, I can say truthfully that my first love affair with a man, at the age of 16, was both wonderful and awful. Awful, because social strictures against homosexuality and against the difference in our ages required that we be secretive about what we were doing. We could not be open, we could not be natural, and we both internalized the experience as something shameful.