You are the one injecting this narrative about women cheating though. It seems to me you’re just making this up. It doesn’t make sense.

Establishing the narrative that if my wife gets HIV that she must be cheating on me is a losing proposition for the man that only increases the probability that his wife will appear to be cheating. There is no motivation for it.

Simply being a dick and saying women can’t use prep because I don’t want them to is a much simpler narrative.

Your reasoning here is similar to arguing they’re a stupid people ergo they don’t use prep because of aliens. It’s not compelling even if you’re willing to believe they may engage in irrational behavior.