The whole story doesn't add up. So some kids sent the "rapist," who was posing as a female on Facebook, some nude photos. So instead of taking the risk of having those nude photos released, he convinced the kids to have sex with him? I mean really? That absolutely makes no sense. First off the kid would get his ass kicked (even by a 13 year old), and no kid is going to perform homosexual acts just so his peter isn't revealed to the general public. As I said, something doesn't add up.
Well as a teenager you're sort of easily embarrassed about these sorts of things, especially in front of their peers. I guess to keep things private kids will go to the extreme to they remain so.