Given that the original poster has offered no facts, only argumentative blame to some nameless people, I have to conclude that this “episode” if indeed it really exists, is some perceived personal vendetta, and not based on anything else.
The bottom line to me is that two people of different ages can connect. Often not, but maybe so. Who am I to say? What’s worrisome to me (and remember we are not encumbered by any facts here) is that we have a dozen people saying how horrible this is, when we know absolutely NOTHING about any of the details. The answers so far are more about sanctimonious holier-than-thou-ism than anything concrete.
Finally, to restate the obvious, the young lady in question is 18 years old, which makes her old enough to make decisions for herself. If she doesn’t like the situation, she doesn’t participate. If she feels coerced, there are any number of paths that she can take.
We would all have been better served with facts instead of trolling innuendos.