Being the monarch of a nation isn’t as glamorous as it sounds. Apparently, as the king, you have to swallow insults and derogatory comments about your family, even if it means unleashing your anger behind closed doors.

Over the years, Donald Trump has done a lot of sugarcoating to make amends with the Royal Family. He even defended Kate Middleton after the controversy over her photoshopped image amid her cancer revelation blew up and refused to die down. He gushed over Prince William’s handsomeness, proclaimed his love for King Charles, and whatnot. But will it all ever be enough to erase his lewd and disgusting comments about Kate and Princess Diana?

More than a decade ago, soon after William and Kate got married, intrusive paparazzi members used a long-range lens to take pictures of the princess while she was sunbathing. This gross violation of privacy was widely bashed, but for Trump, Kate was the one to be blamed in the whole controversy. His comments, downright insulting, reportedly left the future queen feeling “violated” and William “furious” at the then-host of The Apprentice.

“Who wouldn’t take Kate’s picture and make lots of money if she does the nude sunbathing thing? Come on Kate!”

Though Charles seemingly remained silent about the whole affair, the walls of the palace witnessed his anger at the disrespect. As per the biography The King: The Life of Charles III, by Christopher Andersen (obtained by Newsweek), Trump’s comments “resulted in what one Clarence House butler referred to as ‘torrents of profanity’ from both Prince Charles and his sons.”

Charles was reportedly already harboring a very low opinion of Trump, post his disgusting remarks about Diana shortly after her death. In a 1997 interview on The Howard Stern Show, Trump explicitly said he “could’ve nailed” Princess Diana—but added that he’d have insisted she take an HIV test first.

While today the president has already visited the palace once – with the pending invitation for a second visit – during his first term, the king allegedly “burned up the phone lines between Clarence House and Kensington Palace” to stop him from coming to the U.K.

Now, it seems like it’s water under the bridge for Charles… or is it? Though it is his duty to stand with Canada as it fights threats of annexation from Trump, his speech was deemed too fiery by many, more as a declaration against the POTUS and his ambitions. Just a monarch doing his duty or the incensed head of the Royal family who is not a big believer in “forgive and forget?”