And that is the root cause of this whole situation. We need to find a way to change the overall mindset (especially in these here Unitee States) towards other people's personal sexual congresses. Not only should it be nobody else's business, but nobody should even **care** what some person they're neither related to nor dating is doing.
If someone's cheating on a spouse (and the spouse does not approve of extramarital sex), the spouse will likely find out one way or another at some point. What happens to the couple is up to them. But what your employees, or Congressional reps, or sports/music/theatre idols do in their personal lives including sex, just plain shouldn't matter.
I agree with your larger point, other people's sex lives are none of our business. Unless they make it our business. If a Congressman campaigns against homosexual activity and then gets caught engaging in homosexual activity, that is our business. The same for so called "Family Values." Anyone making claims to some sort of puritanical ethic and trying to force that ethic on others.
Basically, anyone vilifying other people for their personal activities is fair game.