Prince Charles is reportedly a very honest man. In fact, if he lied about his real feelings for Princess Diana during their engagement interview, he would’ve have prevented some of his shortcomings, according to one author.

In the book “The Firm,” royal author Penny Junor said that the heir to the throne could’ve avoided many of his disastrous moments if only he could make white lies.

“The Prince of Wales has plenty of shortcomings, but he is not a liar; his great misfortune is that he has never been able to be even faintly economical with the truth. There are so many occasions when the smallest, whitest lie would have saved him a great deal of trouble – starting with his fateful answer on the day of his engagement to Diana about whether he was in love… It has come back to haunt him regularly, as for many years did his admission that he talked to plants,” Junor said.

Junor also talked about the conversation she had with the Prince of Wales in 1986 about the Princess of Wales. At that time, the royal expert asked the future King if he saw it as an advantage to be able to talk to someone who had done ordinary, everyday things before joining the royal family.

According to Junor, Prince Charles surprisingly said that he didn’t talk to his then-wife that much. But he enjoyed talking to Laurens van der Post. After the dad of two gave his surprising response, his then-private secretary Sir John Riddell couldn’t help but clutch his head in his hands.

“But the most disastrous example was during his television interview with Jonathan Dimbleby when he was asked about his infidelity. The question didn’t come out of the blue, and his reply was very well thought out… ‘Yes, until it became irretrievably broken down, us both having tried,’” she said.

Upon hearing his response, the public couldn’t help but hold their heads in their hands and they also gasped with incredulity.

Prince Charles and Princess Diana
Prince Charles and Princess Diana are pictured at an official event during their first royal Australian tour 1983 in Newcastle, Australia. Patrick Riviere/Getty Images