Princess Diana's Former Lover: If Charles Hadn't Cheated, Diana Wouldn't Have 
 
 ETONLINE 
 
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 Princess Diana's former lover, James Hewitt, sat down with ET's Chris Jacobs and revealed his thoughts on how Diana would have felt about the royal wedding, Charles and Diana's infidelity and the rumors he is Prince Harry's father. 
 
 Hewitt, a former officer of the British Household Cavalry said that the late Princess of Wales would have been "very proud and bubbly and jumping about on Friday – if she were here – and she would be very supportive, loving and proud. And she would probably put a joke in somewhere – a practical joke certainly." 
 
 Hewitt also dished on Princess Diana's own marriage, saying, "If Charles hadn't cheated, Diana wouldn't have." 
 
 Hewitt and Diana's affair lasted five years, sparking rumors that he is Prince Harry's biological father. Hewitt set the record straight, revealing that the affair didn't start until after Prince Harry's birth. 
 
 Click to watch James as he tackles the tough questions, and clears the swirling rumors. ||||| A controversial new play about Princess Diana will reignite rumours that Prince Charles is not Prince Harry’s father. 
 
 The West End production - Truth, Lies, Diana - will suggest that former Household Cavalry officer James Hewitt fathered the fourth in line to the throne during his affair with Princess Diana. 
 
 Writer Jon Conway claims Hewitt personally admitted his relationship with Diana started 18 months before Harry was born, and backed the play by allowing the revelation to be used. 
 
 The explosive scene sees Hewitt tell a journalist: “Diana and I started our relationship more than a year before Harry was born. 
 
 “Now that doesn’t prove that I am his father. It’s just the inconvenient truth.” 
 
 The subject is raised again when Hewitt’s character is asked if he knows who Harry’s dad is, replying: “Of course I do”. 
 
 The play, which has already had a successful stint in New York, is due to open at the Charing Cross Theatre in London’s West End on January 9 and play until mid-February. 
 
 Mr Conway said he had spent two years interviewing Hewitt, 56, and had elicited some “remarkable” admissions during their conversations. 
 
 “There is a startling revelation that James Hewitt makes and he has allowed me to make it in the play”, he said. 
 
 “This is the fact that his relationship with Diana started 18 months before Prince Harry was born.” 
 
 The rumour, which has dogged the Royal Family for years, first emerged in the mid-1990s when Diana’s affair with Hewitt became public knowledge for the first time. 
 
 Royal commentators have repeatedly rebuffed the claim, saying the affair did not start until 1986, two years after Prince Harry was born, and the claims drove Diana "wild with fury". 
 
 Penny Junor, the author of a new biography of Harry, says Hewitt was not on the scene in 1984, and points to a negative DNA test conducted by the News of the World in 2003 on a strand of Harry’s ginger hair. 
 
 “If Harry had been shown to be James Hewitt’s son, you can be sure we’d have known", she said. 
 
 Neville Thurlbeck, the News of the World’s former chief reporter, dismissed it as a “conspiracy theory” that had been “killed by Fleet Street years ago”. 
 
 The play follows an investigator as he tries to uncover the truth behind Princess Diana’s death in a Paris car crash with then-lover Dodi Fayed in 1997. 
 
 Mr Conway based his script on a series of books by investigative journalist John Morgan, and drew on interviews with Hewitt and Diana’s former butler, Paul Burrell, as well as transcripts of the inquest into her death. 
 
 He said audience members will be able to decide themselves whether Hewitt’s revelation is true, and whether they believe his public denials about fathering Harry. 
 
 Hewitt confirmed he had been interviewed for the play and that he believed it was “accurate”, but denied having read the actual script. 
 
 In 2003, he firmly denied being Harry’s father, although admitted there were similarities between the two of them. 
 
 “There really is no possibility whatsoever that I am Harry’s father”, he said. 
 
 “I can absolutely assure you that I am not. 
 
 “Admittedly the red hair is similar to mine and people say we look alike. 
 
 “I have never encouraged these comparisons and although I was with Diana for a long time I must state once and for all that I’m not Harry’s father.” 
 
 He added that Prince Harry was already a toddler when he met Diana.
– The handsome British calvary officer who had an affair with Princess Diana contemplated suicide when their five-year relationship became public, he revealed. "I got in my car to go to France—to shoot myself," James Hewitt told Inside Edition. But his mother insisted on accompanying him. If she hadn't "I would have probably shot myself. So I owe her my life." Hewitt said he "felt I had let people down—myself, my family, my friends, the nation, the army, my regiment." He collaborated on a book about their affair, Princess in Love. He told Entertainment Tonight that Diana would not have slept with him if Charles had been faithful. Some people have speculated that Hewitt is Prince Harry's father because of some striking similarities in their appearance. “No I am not" Harry's real father, said Hewitt, who added that his affair with Diana began after Harry's birth. "I am not happy talking about it," he added. As for Diana, "I think we all miss her," he said. "But I've tried to move on with my life." He said she would be "very proud" of William's upcoming marriage.