That is different thing. Making things happening in background I also don't like and consider dealbreaker if it's related to unlikable fetishes for me.
Hm. Ok, I can see where you coming from, but we're not looking at things from same perspective. For me it seems like one of those "parallel universe" scenarios. What would happen if... No need to bother ourselves with that.
But also consider that some (MGA, Deliverance, etc) of NTR games with optional NTR, have additional options to accept or reject NTR, which means that even if you go NTR route it is possible that no NTR happens if you don't want. Is that game "acceptable"? Because, under "certain circumstances", GF "resisted (can resist)". Or if some XYZ person barges into vanilla game and makes NTR mod for it? Would that "ruin" game? Or it "counts" only if dev do that?
Seems to me like unnecessary complicating things without any need. Just cause in "universe A" GF fell for some guy and cheated on her BF, doesn't means that same outcome would happen in "universe B". Maybe she would spill him drink in face or kick into balls. Or at least that's how I see it.
Hope mods wont swipe us cause going offtopic