I despair at some of the replies on this thread.
"No he shouldn't have even gone there but I very much doubt this girl is 100% victim."
She was 100% a victim of a man who groomed her and he deliberately made her feel like she owed him sexual activity because he gave her a present. But that's okay because she was fifteen and probably a bit predatory herself. No.
Ranking victims because of their age, their previous sexual experience, their possible behaviour, is bullshit.
Even more bullshit is ranking how much of a victim someone else is based on your previous sexual experience and behaviour at the same age.
For fucks sake he's admitted in court that he wanted to make her feel like she owed him sexual favours, what more do you need to accept that she is the victim, 100%, because he was the predator in this situation?
"I'm sorry but at 15 you are not a kid, you are coming very close to adulthood and I would question why young girls think it's ok to get close to/make friendships with adult men, we need to educate them and tell them it is not ok to pursue men that are over 16 when they themselves are not."
At fifteen you are a kid. You are coming close to adulthood but you are not an adult. Some sixteen year olds may be level headed and mature, some not so much, but no matter how mature they are, they are not yet adults.
Being close to adulthood doesn't mean that they are capable of dealing with a situation like this, where an adult man takes advantage of their age and inexperience to engineer a situation like this. It doesn't matter that she contacted him first. He initiated all the sexual conversations and engineered a situation to make her feel like she owed him sexual contact with her.
That was not her. That was him.
We do need to educate all teens about sexual abuse, but not in the victim-blaming or slut-shaming way you have suggested.
We need to teach them all, male and female, about enthusiastic consent.
We need to teach them that they can say no.
We need to teach them to accept someone else saying no.
We need to teach them that the absence of a no is not automatically a yes.
We need to teach them that being made to feel as though they owe sex is wrong. Nobody owes sex to anybody else.
We need to teach them that an adult would not expect sex or sexual contact from them.
We need to teach them to respect someone who says they are not sure about sex, or says they are not ready for sex, or says they don't want to have sex.
We do not need to teach them that at fifteen they are practically an adult and so must take a share of the blame if an adult abuses them in some way. Because, and I feel I can't say this often enough, that is bullshit.