Prince Charles Princess Diana
Prince Charles didn’t reportedly take well to Princess Diana knowing about his affair. The former couple is pictured at Wesminster Abbey in London on Feb. 28, 1982. Fox Photos/Hulton Archive/Getty Images

Prince Charles’ affair with his now-wife Camilla Parker Bowles during his marriage to Princess Diana is well-known, but a new claim states that he was livid when he realized his wife knew about his extramarital activities.

In a new report, via Express UK, Princess Diana’s former butler, Paul Burrell, revealed what happened when Prince Charles learned that his wife knew of his affair. In the documentary “The Diana Story,” he revealed that working for the former royal couple could be “incredibly difficult,” and it often felt like “a balancing act” since he was actually working for “two Royal mistresses” at the time.

In his claim, Burrell revealed that Princess Diana would be in residence at the couple’s home, Highgrove, on weekends, while Parker Bowles would visit during the week, and he was in a difficult position whenever he was asked who the Prince was with and where he was if his wife wasn’t around.

One incident, in particular, stood out in his mind after Prince Charles allegedly learned he’d spoken to Diana. After being called into the library, Burell says he was witness to the Prince violently reacting to his alleged “gossiping” with Diana about where he was.

“He picked up a book and started to stamp on the spot, like a petulant child. He hurled the book at me across the room. I dodged and missed it,” Burrell recalled. “I thought, you know I think my time’s up, I think it’s time I got out.”

Following the incident, Burrell began to work solely for Princess Diana, and she moves out of the home in the early 1990s. The couple separated in 1992 and were officially divorced in 1996. Diana died in a car accident in Paris in 1997.

The Prince still lives at the Highgrove residence, no married to Parker Bowles, who serves as the Duchess of Cornwall.