How do you explain to a blonde that a coworker has a wife at home and is a good family man? She just doesn't get it! It is easier to cum in her mouth than to explain it. So his conscience can be calm - he did not cheat, he just bought the girl a cocktail. And he put it in her pussy just to make conversation - fuck me, das ist fantastisch. Let the blonde think it was her charm that worked and make her feel happy.
Too bad there is no backstory, why the neighbor was on the table, why he was so hard to punish her, though it is understandable - without a reason to put in the anus with a full run, few will put in. She deserved it. Or is it a neighborhood game? Like, you poured water all over my apartment, and I'll pour sperm in your asshole. This version I like more, and then everything looks different - not enough he gave her, for such a need much more!