What happens at the end of Adulterers the Movie?

 Adulterers

On END it is shown that for the first time when the husband shoots both his wife and the other person, only at that point does the situation cease and what happens after that happens in the MOVIE, his mind is part of his conscience. It ends up in making and hating. He could not get his wife to cheat on HIM

From how I see it, none of the whole movies actually happened. The first scene was the real deal. He walks in on them and shoots them both. But as soon as considered done burying them both, he is filled with regret. Not because they're dead, but because he realizes he will never ever be able to get any 'answers' as to why his wife cheated on him (We hear him telling them about wanting to find 'answers' when he starts with his whole interrogation thing). Then, it's pretty much his mind making up this whole scenario (using unrelated details from events that he had encountered earlier on in the day) of how each of them had 'reasons' from their past for what they did. Kinda like him trying to cope with the fact that he'll have to live without ever knowing what went wrong.