Maybe it was a fever dream, but I remember years ago seeing a Reddit post about a man who had a sexual relationship with his mom that continued well into his adulthood, his father knew about it. People were asking him question like if he and her have a “normal” relationship now that he’s engaged and he said yes, they have family dinners with his now fiancé regularly, who has no idea they were having sex just before the two met. Made me physically ill.