He's so cute! i've decided to marry him! protecc him at all costs!
So for some reason he needs a wife, and because he is called a monster he didn't think he would get one ever. And he doesn't want a real marriage for now.
Please don't call him a p*do cuz it's obvious that is not happening here. He doesn't see the girl as a woman, just as a means to an end. He even said that he's happy with just a marriage in form.