It is absolutely normal for a male member of the British Royal Family to have an affair. What Charles did with Mrs. Parker-Bowles while he was heir to the throne would not have caused a ripple on the pond had he not been married to Lady Diana Spencer. No one had explained how it worked to her and she was crushed by the reality. But to act as if Charles did something wrong for his position is crzay. He did what he was expected to do. The funny thing is that he actually loved his mistress.
I find it highly ironic that a male member of the British Royal Family, including a reigning King (or Queen - or is it also sexist?) who is the accepted head of the Anglican Church, believed to be appointed by God himself, but blatantly and expectedly violates the religion's 7th commandment, and in earlier days #6 (beheadings) with full consent of followers. Admittedly, this is not so different than the notion that the Pope is infallible and speaks directly to God, all the while overseeing the multitude of awful things the Catholic church is guilty of (I was raised Catholic.)
...all just a method to control the masses.