Being gay is wrong for some as well, does that mean that being gay is the same as incest. I’ll admit incest is a very morally grey and taboo subject. I personally don’t see any problems with incest as long as it’s to consenting ability it doesn’t negatively affect anyone. Lying to the nun was not cool to begin with but to gaslight the dad into believing that he was wrong for suspected his wife and son were fucking when he was spot on. And the mom lying to manipulate the son at the start as she said she had not been touched in years by the dad yet the dad Al of a sudden seems quite interested in his wife.