I believe you are talking about the add MC, add wife, ntr option at gym. to avoid the other stuff you have to deny sissification/fem offers a few times, Salim App and Jenna all reccomend or offer those at some point. aside from slightly confused wording with Salim easy enough to avoid.
however, if you want to avoid all the extra influence on the wife, in the end, to the update at hand, it all off the rails and MC is left to masturbate only no matter what choices are made. best example, many updates back the wife going QOS is an option, even if you choose no, she eventually goes QOS anyway. and if you choose yes, she screws white guys anyway. either way wife stops screwing MC saying she only bangs black dudes and he has more fun not having sex with her. then MC complains or thinks he misses pussy but then does right back to simping to wife, oh and her sister and niece. for people who are into being caged or denied sex, great, but the lack of choice in the end is what im referring to as problematic. basically on this route no matter MC's choice he winds up acting like someone else is controlling him. oh and he lets the people who betrayed him screw his wife and humiliate him constantly, she does to and likes it. once again, fine if it gets you off, but there is no choice in the matter. which makes no sense, cause MC has himself and his wife on the app, giving him all the power, while he has none? anyway hope aside from my rant and extra info it answered your question