Well, as a matter of fact.....
lol
I mean, are you being sarcastic? That scenario is in like...
all of these games.
In this game at least, well I'm not sure if you consider extramarital sex with permission to be "netorare" (I hate the pretentious definitions, like netotorini is when your wife gets banged while eating rotini pasta salad, but only if your mom knows). But this game has a drinking/strip poker section on all paths and the wife gets banged by some dude afterwards on the Open and Cuck paths.
If it strictly
has to be cheating you can still do it on the "make it work" path. Though the dev claims that's a bug.
Make It Work Path strip-poker cheating:
-Select to see the wife's content. This won't work otherwise.
- Select "Make it work" on your second relationship discussion after researching the various relationship types on the pc that appear after your first relationship conversation.
- Make sure wife's satisfaction is at 0 before Brian's visit (he will text you on a Friday when wife satisfaction is at 55 or less). Any satisfaction below 10 may work, but 0 to be on the safe side. Note: If Brian texts you on Friday and you're not below 10, just ignore the text till Saturday. It'll be gone when you check your phone again. You can then play through till the next Friday, giving you more time to hit 0. He'll text again that Friday.
-When Brian visits: Drink at your apartment till wife is blackout drunk (may or may not be required).
- After the "strip poker" show, pass out drunk in your bed instead of banging the wife. She'll end up banging Brian in the next room & a conversation will happen in the morning. But then the game acts as if nothing ever happened here, forgetting the whole incident.
[Note: I might save before passing out, just in case. Or better yet, before the three of you start drinking. In my experience, it happens each and every time in this scenario. But better to back-up, just in case there's some RNG involved.