Camilla Parker-Bowles “devastated” Prince Charles at one point. Prince Charles and Camilla, Duchess of Cornwall are pictured at the 150th Academy of Music Anniversary Concert in Philadelphia on Jan. 27, 2007. Matt Rourke-Pool/Getty Images

They’ve been married since 2005 and are known for the affair they had for years prior to that, but the end of their romance prior to Camilla Parker-Bowles' first marriage reportedly left Prince Charles devastated.

In the 2018 documentary “The Story of the Royals,” royal biographer Penny Junor revealed that Camilla’s past initially kept her and Prince Charles apart and that their decision not to pursue their romance at the time eventually devastated the heir to the throne.

“Camilla was not an aristocrat and she had previous boyfriends. She had a boyfriend when she met Prince Charles,” Juror said.

However, according to royal protocol at the time, it was vital that the wife-to-be of the heir to the throne be a virgin, something Camilla was not, especially since she had been dating Prince Charles’ friend, Andrew Parker-Bowles.

“A woman with experience and knowledge was not an appropriate partner for the future King of England,” ABC correspondent Chris Connelly added.

As a result, Charles was forced to call off the relationship, and when he went to the Caribbean to spend time in the Royal Navy, he became devastated after receiving a letter from Camilla where she revealed she was going to marry Andrew.

“Charles was absolutely devastated—there was a lot of pressure to find a bride,” Junor went on to add.

As a result, he went on to meet Princess Diana and marry her in 1981. However, due to his unresolved feelings for Camilla, the pair went on to have an affair, which Diana famously called out following the end of her marriage.