Man, playing corruption or ntr games, I hate when the corruption isn't tied to the story, aka you have a voyeur scene or something hinted about sex happening, then sex stats update, then the day after, zero change, nothing happened in story, it doesn't matter if the girl was pounded the night before.
Boring and lazy.

Adding flavour text like the girl being tired, or even better, pieces of evidence (you visit the room and there are traces of sex), should be the norm.