Camilla Parker Bowles’ ex-husband, Andrew Parker Bowles, played a key role at Prince Charles and Princess Diana’s wedding.

It is unclear if at that time he was already aware that Prince Charles was having an affair with his wife. According to Express, Prince Charles and Camilla’s affair didn’t start until after the heir to the throne tied the knot with the Princess of Wales.

But multiple royal experts and documentaries have claimed that Princess Diana knew about the Duke and Duchess of Cornwall’s affair even before she married the future King.

In the documentary “Wallis Simpson – Royal Stories: Episode 5 – Camilla Parker Bowles,” the narrator said that Prince Charles and Andrew were so close that the former asked the latter to be one of the securities at his wedding to Princess Diana.

“When Charles dated Diana, the Parker Bowles was never far away. Andrew was promoted and got one of the best jobs in the Army. [Charles] chose Parker Bowles to be his head of security when he finally married Diana, his personal bodyguard riding beside the royal carriage after the ceremony,” the narrator said.

And if Prince Charles was seemingly very fond of Andrew, it became evident that the latter also felt the same way about him. During a previous interview, Andrew talked about the important role that he was given at the royal wedding.

“Historically, the ceremonial side is the most important side. But at the same time, there is the protection side, the security side. You know as well as I do, everyone knows, [Charles is] a marvelous leader and a marvelous man,” he said.

Camilla and Andrew tied the knot in 1973 and they were still together when Prince Charles and Princess Diana wed in 1981. But during the couple’s marriage, it was revealed that Andrew was the one who cheated on Camilla first.

As such, he didn’t question why Camilla cheated on him with Prince Charles because Andrew understood that Prince Charles needed someone like Camilla.

Prince Charles, Camilla
Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall attend the reopening of Hillsborough Castle on April 09, 2019 in Belfast, Northern Ireland. Getty Images/Chris Jackson