In his opinion, what he did shouldn't be illegal. The girls were not that young (14-18) and he didn't force them.

As a society we have agreed on laws against it because we know girls of that age still just do whatever they are told, do not really exert their own will yet, and a commanding presence suggesting things to them is hard to push back against when you are that young.

But why would evolution make it such that girls go through puberty and yet no men are attracted to them for another 4 years even as they are biologically ready? It's not logical. Clearly some men will be attracted as soon as puberty has completed - the early bird gets the worm.