Prince Harry was "extremely" mad by Prince William's questioning about his hasty affair with Meghan Markle that he told his older brother: "Who the hell do you think you are?"

According to Fox News, author Christopher Andersen made the claims in his new book "Brothers And Wives: Inside The Private Lives of William, Kate, Harry And Meghan," out Nov.30.

Andersen quoted a source saying the outburst happened in September 2017 when Harry, 37, intimated he was planning to propose to his American actress girlfriend.

The second in line to the throne, William, asked his sibling, "Why rush things?"

A palace insider who participated in Christopher Andersen's upcoming book digs into the so-called "heir and spare's" once-close connection. The ongoing drama, according to the source, apparently caused things to fall apart. Prince Harry's inner circle is alleged to be worried about his fast romance with the divorcee he met on a "blind date" in July 2016.

Earl Spencer, the late Princess Diana's brother, was one of the skeptics, whom he gathered to back up his conviction that the couple should take it easy. Because Prince Harry was "furious that his brother was deliberately attempting to have people intrude in his personal issues," According to  Page Six, Andersen said the technique aggravated the situation significantly.

The Royal Family has not ruled out taking legal action against the BBC over a new documentary about Princes William and Harry's press relations. The first episode of 'The Princes and the Press,' which features inflated and unfounded accusations, has enraged the royal households.

Lawyers will be watching the second half on Monday with bated breath because the royal households allegedly lobbied against Harry and Meghan. According to the Mail on Sunday, they may act accordingly if they believe the corporation has infringed rules of truth and impartiality and not giving them a fair opportunity of reply.

After Prince Harry objected online, the term "Megxit," which people used to describe the Sussexes' difficult decision to leave the Royal family, has been changed by 'Sussexit.' The allegations made in the show by "pro-Sussex" journalists are alleged to have outraged royal aides.

They alleged that the BBC failed to respond to the charges with a sufficient right of reply. One of the journalists, Omid Scobie, claimed that people had disseminated bad reports about Meghan Markle to put her in her place.

Scobie made a claim without providing any convincing evidence, and the documentary's host, Amol Rajan, did not refute him. Jenny Afia, Meghan Markle's lawyer, featured in the documentary with Meghan's permission to rebut claims that she was difficult to work with.

Despite the fact that Buckingham Palace has launched an internal inquiry into allegations that Meghan Markle harassed servants, Afia's claim was not challenged on the broadcast. The second series, which includes charges that top royals, including Prince William, planted pieces about Prince Harry's mental health, is expected to stir up even more outrage.

Prince William, who has fought on mental health concerns, is said to be offended by the statement. Prince Harry was the one who first brought up the matter of his mental health during a televised interview in 2019, admitting that he had a return of mental health concerns that required "constant treatment."

Prince William got "worried" about his brother's well-being after viewing the interview. According to MIRROR, the three royal families - Buckingham Palace, Clarence House, and Kensington Palace - are reported to be on the same page over their reactions to the documentary, with a final decision on whether or not to take action to be taken when the second series airs.

Prince Harry and Meghan Markle Prince Harry, Duke of Sussex, and Meghan Markle, Duchess of Sussex, attend the 2021 Salute To Freedom Gala at Intrepid Sea-Air-Space Museum on Nov. 10, 2021 in New York City. Photo by Dia Dipasupil/Getty Images