U really don't get the Monarchy(s) and their foibles do you?
https://www.dailymail.co.uk/news/article-3052235/Spain-s-former-monarch-King-Juan-Carlos-having-affair-German-aristocrat-ten-years-reign-claims-new-book.html
william IV of England- At the time of his death William had no surviving legitimate children, but he was survived by eight of the ten illegitimate children he had by the actress Dorthea Jordan, with whom he cohabited for twenty years.
Edward VII-Edward had mistresses throughout his married life. He socialized with actress Lillie Langtry:; Lady Randolph Churchill (born Jennie Jerome, she was the mother of Winston Churchill); Daisy Grenville, Countess of Warwick; actress Sarah Bernhardt; noblewomanLady Susan Vane-Tempestt; singer Hortense Schnider; prostitute Giulia Beneni (known as "La Barucci"
; wealthy humanitarian Agnes Keyser; and Alice Keppel. At least fifty-five liaisons are conjectured.How far these relationships went is not always clear. Edward always strove to be discreet, but this did not prevent society gossip or press speculation.] One of Alice Keppel's great-granddaughters,Camilla Parker-Bowles, became the mistress and subsequently wife of Charles, Price of Wales, one of Edward's great-great-grandsons. Edward never acknowledged any illegitimate children. Queen Alexandra is believed to have been aware of many of his affairs and to have accepted them.
The Duke of Edinburgh-
Sarah Bradford is one of the few biographers to outright claim Philip indulged in extramarital affairs—in her 2011 book Elizabeth II: Her Life in Our Times—while most others, in the careful words of The Telegraph,“dipped into [the subject] with a very long spoon.” During a conversation with fellow biographer Brandreth, Bradford insinuated that she had spoken to women who confirmed romantic relations. She added, “The Duke of Edinburgh has had affairs . . . full-blown affairs and more than one. He has affairs and the queen accepts it. I think she thinks that’s how men are . . . He's never been one for chasing actresses. His interest is quite different. The women he goes for are always younger than him, usually beautiful, and highly aristocratic.”
Diana own mother was married to a much older man she bolted and ran off w an Argentinian Polo player. Lady Spencer knew how the game was played- she just came up w an alternative version of the facts.