A prenup in this instance would be useless because he amassed the vast majority of his wealth after the marriage. It's basically toilet paper with fancy scribbling at that point lol. They probably came to some sort of arrangement anyway. Besides, I'd bet my left bollock that their marriage has been over for a while.Guys lets not get carried away motherhood is no easy task and birthing a child is very painful, raising them even more so. Perhaps not worth a billion but Bill Gates must pay up due to his vast wealth. Its his fault he didnt sign a prenup