The People’s Princess chose an unusual location to tell her son about Charles’ affair

Princess Diana is said to have chosen an unusual location to break the news to Prince William about Charles’ relationship with Camilla.

When parents break the news to their kids they are divorcing it is never an easy conversation to have.

And Princess Diana is said to have gone to Prince William’s school when she tried to explain about Prince Charles’ affair.

Speaking in her 1995 interview with the BBC's Martin Bashir, Princess Diana said she tried to talk the heartbreaking decision through with her young son, The Sun reported.

Diana maintained a very close relationship with her sons throughout her life. Picture: AFP

Prince Charles (L), Princess Diana (R) and their children William (2nd L) and Harry watch the march past on a dais on the mall as part of the commemorations of VJ Day on August 19, 1995. The commemoration was held outside Buckingham Palace and was attended by 15,000 veterans and tens of thousands of spectators. / AFP PHOTO / Johnny EGGITT

The royal said: “I went to the school and put it to William, particularly, that if you find someone you love in life you must hang on to it and look after it, and if you were lucky enough to find someone who loved you then one must protect it.

Diana with a young Prince William. Picture: AFP

"William asked me what had been going on, and could I answer his questions, which I did. He said, was that the reason why our marriage had broken up?

"And I said, well, there were three of us in this marriage, and the pressure of the media was another factor, so the two together were very difficult.

"But although I still loved Papa I couldn't live under the same roof as him, and likewise with him."

After chatting things though with William, she admitted she didn’t know how he felt for a few hours, as he’s a “deep thinker”.

She added: “But I put it in gently, without resentment or any anger.”

According to Marie Claire, Prince Harry found out when he saw the affair being reported on TV. Picture: Supplied

Unfortunately, Prince Harry didn’t hear about the affair until he saw it on TV, according to Marie Claire.

Despite any tensions between their parents, both William and Harry are fiercely protective of their late mum.

William said after he became a patron of the Child Bereavement Charity in 2014: “Losing a close family member is one of the hardest experiences that anyone can ever endure.

Kate, William and Harry prepared to pay tribute to Princess Diana on the 20th anniversary of her death. Picture: AFP

“Never being able to say the word 'Mummy' again in your life sounds like a small thing.

“I, too, have felt — and still feel — the emptiness on such a day as Mother's Day.”

This article was originally published in The Sun and has been reproduced here with permission.