So, "you two can sleep together, as long as you're using condoms"? As I said, liberalism is poisoning us all.
That isn’t what I was saying. I’m saying that the guy has to deal with a stepkid more carefully than his own. Try to give the kid something to think about - negative alternatives and such, so that he acts in his own (and the gal’s) better interest.
And, given that someone reminded me the ‘kid’ is 22, I’d probably lay the law down harder and say if you want to play house, you need to get your own.