I don’t know if the reason I didn’t understand this is because English isn’t my native language, but I didn’t see any sense of it.
To be fair its not in the proper classic definition, in that a cuckold is a man forced to raise another man's child after his wife cuckolded him.
Its more in the modern populist internet/fetish sense of having someone bigger/more powerful have their way with your most important person while you look on, but in this case its not your soulmate but your very soul they are having their way with.
It is certainly not a very "Chad" thing to do.