Prince Harryis “not holding anything back,” saysGood Morning Americahost Michael Strahan after the Duke of Sussex sat down for an interview with him.

In a preview of their sit down, which will air in full on Monday morning ahead of the release of Harry’s memoirSparethe following day, Strahan says thatPrince Harryreferred to his brotherPrince Williamas both his “beloved brother” and his “archnemesis” in the book.

Prince Harry, 38, replies, “There has always been this competition between us, weirdly.”

Speaking with his cohosts, Strahan said that he had readPrince Harry’s book, which includes insight about the grief over the death of his mother Princess Diana when he was 12, his time in the military and his role as a husband toMeghan Markleand father to son Archie Harrison, 3, and daughter Lilibet Diana, 1.

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“He is not holding anything back,” Strahan said. “I read the book from the front page to the last, and you’re amazed at how open he is.”

Prince William and Prince Harry.Daniel Leavl-Olivas-Pool Getty Images

Prince William and Prince Harry

William reportedly called Meghan “difficult,” “rude” and “abrasive,” to which Harry replied that his brother was simply “parrot[ing of] the press narrative” about his wife.The Guardianreports that Harry then accused his brother of acting like an heir, after which insults were exchanged. William reportedly claimed he was just trying to help.

Harry says he called his therapist, but it was only when Meghan noticed “scrapes and bruises” on his back that he says he revealed the incident to his wife.

Prince William and Prince Harry.Chris Jackson/Getty Images

Prince William, Prince of Wales and Prince Harry, Duke of Sussex walk behind the coffin during the procession for the Lying-in State of Queen Elizabeth II

The book jacket of Prince Harry’s memoir ‘Spare’.PENGUIN RANDOM HOUSE

Prince Harry book

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In an interview withAnderson Cooperfor60 Minutes, Harry expanded on allegations of “leakings” in the media and how negative stories have affected him and Meghan. He also told Cooper why he’s addressing these matters publicly.

“Every single time I tried to do it privately, there have been briefings and leakings and planting of stories against me and my wife,“Prince Harrysaid. “You know, the family motto is ‘never complain, never explain’ … it’s just a motto and it doesn’t really … hold.”

source: people.com