Bellamort is all I have to say. Combining books, movies and the summary about the 'Cursed child', I tried to give some sense to the events. For all those who can't imagine, Voldemort even having the wish to procreate, keep in mind what the Nazi's tried during their regime. Breeding the perfect race. And what better genetic material would he consider to choose than his own and that of the only other person he even slightly feels anything for. I also got some inspirations from other fanfictions, which I will mention once I found the time to seek them all out.