You don't have to deceive people, this is a game with inevitable NTR, the main character's girlfriend is an ordinary whore who cheats on the main character, this cannot be avoided
If you could not avoid it you fucked up somewhere. She get's sexually assaulted and harassed but does not "give in" if she has an alternative .
PS: At least in the current version (v.0.14.9) of the game my "cheating counter" sits at 0
