The so called ntr was removed long ago because some people basically had fainting fits over it. I will release s directors cut at some point that is my story. I'm almost there because it's not like I'm dependent upon my patrons. So ntr may be back in because;
A) it's not actually ntr unless you're so insecure that you have fainting fits over an anonymous character labelled as "your girlfriend" having sex with another man (even though that sex is the only time she appears in the game and is therefore just a plot device)
B) her storyline was inspired by Selena Green Vargas and her visit to Girls Do Porn. Since the GDP real-life story is crazy as all fuck, it opens itself to the scenario of the ex-gf trying to ingratiate herself back into the mpc's life and might make the game less linear.
Just some thoughts.
If people faint over something within YOUR game, well, FUCK EM! It's YOUR game, not theirs. If they don't like it, they can make their own fucking game!
Especially since:
1. The "ntr" is an important part of your storyline.
2. Technically, it wasn't even NTR, nor cheating, but voyeurism.
Sorry, but adapting YOUR storyline to remove "ntr" because of a bunch of whiners is in my opinion as bad as adapting YOUR storyline to ADD something like Futa or gay or scat content because a vocal minority of idiots demand you include it. It's YOUR storyline. Do yourself a favor, and stick with it. It will make it much easier for you to make the game you want to make, than to make the game you don't want to make, no matter if you make 8 bucks, 80 bucks or 8,000 bucks a month from it.