It is hard to take anyone seriously who says idiotic things of this nature. Especially when they use terms that they don't even understand correctly. Time to learn something.
The term does not apply. The origin of the term is the cuckoo bird, which has a habbit of laying their eggs in other bird's nests. Thus getting other birds to take care of their offspring.
And then even adultery itself -
The sexual activities that constitute adultery vary by culture. The concept doesn't even exist in the culture of the ghouls. It is pretty weak really with any species following Vida on account of her own nature.
So what really bothers you
is your own personally held conceptions of relationships, and that they don't follow them. No one is under any obligation to hold and follow YOUR VIEWS. Of his "future wives" (and I say that as he obviously is far too young to consummate any marriage), there is only what... Basdia who gets pregnant? Ghouls aren't going to stop being ghouls overnight. Should they really abstain for over a decade with the intent of possibly breeding with Van that much later? That would be stupid in many ways. Perhaps the issue is you see women as property. Or perhaps your frustration over not getting laid. Some mixture of that. Regardless of your personal issues, the idea that they may get with Van so much later doesn't negate that they have lives to live all the meanwhile.
