Have you never heard of Nabokov's Lolita? And have you not heard of young girls being called jailbait? They are called that for a reason
That book wasn't written by a 14 year old girl (and was about abuse of a 12 year old), and that term isn't used by 14 year old girls.
It's entirely "dirty old man" territory.
The whole point of age-of-consent is to prevent people taking advantage of young people who may be inquisitive or driven by their changing hormones. Even if she instigated something, she's still the victim - the 30 year old man should know better ... and did, because he knew to hide it.
Please don't attempt to "normalize" this behavior. It's not acceptable and it's not open for debate.