Difference between childhood experimentation and abuse? (possible trigger warning)

Hayley • ~IT'S A GIRL!! 💕baby # 2 due May/June 2019~ 💙William Jack 17-08-17 💙

I read a news story today that said there is a rising number of 'child on child' sexual assault cases in Australia. The story claimed the most common causes for a child to commit these kinds of crimes can be anything from witnessing sexual violence themselves, being a victim and reenacting abuse, and having sociopathic tendencies. So this got me questioning where the line is between normal experimentation and actual abuse. As I'm sure most of us as children encountered some kind of sexual experimentation between ourselves and similarly aged friends. Whether it was showing each other our privates etc... I think we can all agree that a child coercing or forcing another child to do something would be wrong and could be considered abuse, but what if both children willingly decided to engage in the sexual experimentation? One of the stories I read about this topic did not seem out of the ordinary at all (two boys the same age, around 6 I think, both willing participants) however the boy who suggested it was blamed by the other boys mother and she believed her son had been molested. What do you think?