[ This is so disgusting that I almost physically feel like I’m smelling something bad. Even if it really did begin when the daughter was over 18 (which I don’t believe at all), a parent could NEVER have a truly consensual relationship with a child. That parent/child inequality will always be there. We are set up to trust and lean on our parents for our entire lives (which is why it feels so weird when parents hit old age and have to lean on us instead). I hope all his friends shun him completely and he ends up leaving the country. How horrible. ]
It is also the same reason Teacher/Student relationships are taboo along with Boss/Employee relationships. The whole inherent inequity of the power dynamic is there.
Unless you're a Democratic president fooling around with an intern. /s