Just because kids hit puberty early dosent excuse his behavior. She was only 13, she likely had little to no understanding that what she did would endanger her and probably dosent fully understand that sex can lead to consequences like pregnancy and STDs. Thirteen year olds dont fully understand that their libido and seducing people can get them into trouble. That's why it's illegal in the first place and why the Age of Consent exists. It was still rape, he took advantage of her, and he claims he didnt know it was wrong? Im sorry, but that excuse dosent fly. In the US, he would never be let go, he'd be put in jail and labeled a sex offender. The charge should never have been thrown out.