Princess Diana told friends she would reject Dodi Al Fayed's proposal: Author

Princess Diana's relationship with Dodi Al Fayed was called her last great love affair — but was it really?

Author Christopher Andersen has just released the 20th anniversary edition of his bestselling book, "The Day Diana Died."

"She told her friend she was deliriously happy with Dodi Al Fayed in those last weeks, cruising aboard his father's yacht," he told Inside Edition. "But what she was really trying to do is make the man she really loved jealous. That man was Pakistani heart surgeon Hasnat Khan."

Read: Princess Diana Smashes Sand Castles and Plays Dress Up in Rarely Seen Childhood Videos

44 PHOTOS
Princess Diana and her fabulous travels
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Princess Diana and her fabulous travels
GIBRALTAR- AUGUST 01: Prince Charles, Prince of Wales and Princess Diana, Princess of Wales, wearing a Donald Campbell dress, leave for their honeymoon cruise on the Royal Yacht Britannia on August 01, 1981 in Gibraltar. (Photo by Anwar Hussein/Getty Images)
The Prince and Princess of Wales leave Gibraltar on the Royal Yacht Britannia for their honeymoon cruise, 1st August 1981. The Princess wears a Donald Campbell dress. (Photo by Tim Graham/Getty Images)
BALMORAL, UNITED KINGDOM - AUGUST 19: The Prince And Princess Of Wales On Their Honeymoon In Balmoral, Scotland (Photo by Tim Graham/Getty Images)
BALMORAL, UNITED KINGDOM - AUGUST 19: Prince Charles With His Arm Around Princess Diana As They Sit On A Style During Their Honeymoon At Balmoral In Scotland.the Princess Is Wearing A Suit Designed By Bill Pashley With A Pair Of Shoes By The Chelsea Cobbler. (Photo by Tim Graham/Getty Images)
15th June 1983: Charles, Prince of Wales, and Diana, Princess of Wales, (1961 - 1997) on holiday in Nova Scotia. (Photo by Central Press/Getty Images)
FRANCE - UNDATED: Princess Diana, Princess of Wales poses in a bikini whilst on holiday in the South of France. (Photo by Anwar Hussein/WireImage)
VIRGIN ISLANDS - UNDATED: Princess Diana, Princess of Wales enjoys a swim in the Virgin Islands. (Photo by Anwar Hussein/WireImage)
FRANCE: The Princess of Wales enjoys a swim in the South of France. (Photo by Anwar Hussein/WireImage) *** Local Caption ***
KLOSTERS, SWITZERLAND - FEBRUARY 1986: Princess Diana, Princess of Wales, wearing red ski gear and a red and white head band, enjoys a skiing holiday in Klosters, Switzerland in February 1986. (Photo by Anwar Hussein/WireImage)
(From left to Right) Prince Charles, Princess Diana, The Duchess of York Sarah Ferguson and The Duke of York Prince Andrew posing for photographers on their skiing holiday at the Swiss resort of Klosters. Wednesday 17th February 1987. (Photo by Kent Gavin/Mirrorpix/Getty Images)
KLOSTERS, SWITZERLAND - FEBRUARY 17: The Duchess Of York (sarah Ferguson) And Princess Diana Having Fun On Holiday In Klosters. (Photo by Tim Graham/Getty Images)
Members of the British Royal Family on a ski holiday, (L-R) Prince Charles, Prince Andrew, Princess Diana and the Duchess of York, in Grisons, Switzerland, February 17th 1987. (Photo by Tim Graham/Getty Images)
Princess Diana on a ski holiday in Klosters, Switzerland, February 6th 1986. (Photo by Tim Graham/Getty Images)
KLOSTERS, SWITZERLAND - FEBRUARY 06: Diana, Princess of Wales, wearing red ski gear and a red and white head band, enjoys a skiing holiday on February 06, 1986 in Klosters, Switzerland. (Photo by Anwar Hussein/Getty Images)
MAJORCA-AUGUST 10: (FILE PHOTO) Princess Diana, Princess of Wales with Prince William and Prince Harry on holiday in Majorca, Spain on August 10, 1987. Also present were the Spanish Royal Family and the Prince of Wales. (Photo by Anwar Hussein/Getty Images)
MAJORCA, SPAIN - AUGUST 08: Prince Charles And Princess Diana With Prince William And Prince Harry On Holiday In Majorca. Also Present Are Queen Sofia Of Spain And Infanta Elena. (Photo by Tim Graham/Getty Images)
PALMA, SPAIN - AUGUST 10: Diana, Princess of Wales poses with Queen Sofia of Spain during a summer holiday in Majorca on August 10, 1987 in Palma, Spain. (Photo by Anwar Hussein/Getty Images)
Princess Diana (1961 - 1997, left) with the Duchess of York during a skiing holiday in Klosters, Switzerland, 9th March 1988. (Photo by James Andanson/Sygma via Getty Images)
Left to right: the Duchess of York, Princess Diana (1961 - 1997) and Prince Charles during a skiing holiday in Klosters, Switzerland, 9th March 1988. (Photo by James Andanson/Sygma via Getty Images)
NECKER ISLAND, BRITISH VIRGIN ISLANDS - JANUARY 9: Diana, Princess of Wales, with Prince Harry on holiday on Necker Island , on January 9, 1989 in Necker Island, British Virgin Islands. (Photo by Julian Parker/UK Press via Getty Images)
NECKER ISLAND, BRITISH VIRGIN ISLANDS - JANUARY 9: Diana, Princess of Wales, on holiday on Necker Island , on January 9, 1989 in Necker Island, British Virgin Islands. (Photo by Julian Parker/UK Press via Getty Images)
NECKER ISLAND, BRITISH VIRGIN ISLANDS - JANUARY 9: Diana, Princess of Wales, on Necker Island , on January 9, 1989 in Necker Island, British Virgin Islands. (Photo by Julian Parker/UK Press via Getty Images)
NECKER ISLAND, BRITISH VIRGIN ISLANDS - JANUARY 9: Diana, Princess of Wales, on Holiday on Necker Island , on January 9, 1989 in Necker Island, British Virgin Islands. (Photo by Julian Parker/UK Press via Getty Images)
NECKER ISLAND - APRIL 11: Princess Diana In Leopardskin Swimming Costume And Sarong On Holiday In Necker Island In The Caribbean (Photo by Tim Graham/Getty Images)
The Prince and Princess of Wales holiday on a yacht with King Constantine II of Greece, 1990. (Photo by Georges De Keerle/Getty Images)
NECKER ISLAND, BRITISH VIRGIN ISLANDS - APRIL 11: Diana, Princess of Wales, with Prince William, on Holiday In Necker Island In The Caribbean, on April 11, 1990, in the British Virgin Islands. (Photo by Julian Parker/UK Press via Getty Images)
SPAIN - AUGUST 15: Princess Diana on holiday in Majorca with King Constantine of Greece and his daughter, Princess Theodora on the King's yacht, Fortuna. (Photo by Tim Graham/Getty Images)
MAJORCA, SPAIN - AUGUST 15: Princess Diana On Board The Yacht Fortuna On Summer Holiday In Majorca (Photo by Tim Graham/Getty Images)
MAJORCA, SPAIN - AUGUST 15: Diana, Princess of Wales, on board the yacht of King Juan Carlos of Spain 'Fortuna' on summer holiday on August 15, 1990 in Majorca, Spain (Photo by Georges De Keerle/Getty Images)
SAINT KITTS AND NEVIS - JANUARY 1993: Diana, The Princess of Wales walks in the sea on January 1993 in the Island of Nevis. (Photo by Julian Parker/UK Press via Getty Images)
Princess Diana (1961 - 1997) in the surf off the Island of Nevis, during a Caribbean holiday, 2nd January 1993.(Photo by Thierry Orban/Sygma via Getty Images)
SAINT KITTS AND NEVIS - JANUARY 1993: Diana, The Princess of Wales walks in the sea on January 1993 in the Island of Nevis. (Photo by Julian Parker/UK Press via Getty Images)
The Princess of Wales (C) watches for a wave while surfing at Indian Castle Beach 02 January 1993. Princess Diana is vacationing with her sons William and Harry. (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
SAINT KITTS AND NEVIS - JANUARY 1993: Diana, The Princess of Wales walks in the sea on January 1993 in the Island of Nevis. (Photo by Julian Parker/UK Press via Getty Images)
GIZA, EGYPT - MAY 12: Diana Princess of Wales visiting the Pyramids in Giza during an official tour of Egypt. (Photo by Tim Graham/Getty Images)
GIZA, EGYPT - MAY 12: Diana Princess of Wales visits the Pyramids in Giza during an official tour of Egypt. (Photo by Tim Graham/Getty Images)
SAINT KITTS AND NEVIS - JANUARY 1993: Diana, The Princess of Wales walks in the sea on January 1993 in the Island of Nevis. (Photo by Julian Parker/UK Press via Getty Images)
LECH, AUSTRIA - MARCH 25: Diana, Princess Of Wales, On A Spring Ski-ing Holiday With Her Sons, Prince William And Prince Harry, And Her Friend Kate Menzies. (Photo by Tim Graham/Getty Images)
AUSTRIA - MARCH 26: Diana, Princess of Wales running whilst on a skiing holiday in Lech, Austria (Photo by Tim Graham/Getty Images)
Princess Diana (back row, R), along with her friends Kate Menzies (back row C) and Catherine Soames (back row, L), rides 26 August 1993 the Splash Mountain ride at Disney World's Magic Kingdom during the third day of their vacation. Front row left is Prince Harry, son of Princess Diana. Other passengers are unidentified. (Photo credit should read BOB PEARSON/AFP/Getty Images)
Photo taken on July 14, 1997 shows Britain's Lady Diana taken by an unidentified young girl for a jet-ski ride off the property of her friend Dodi Al-Fayed in Saint Tropez, on the French Riviera. Diana, Princess of Wales, and her companion, the Egyptian millionaire film-producer Dodi al-Fayed, died in Paris early 31 August after a midnight car crash. / AFP PHOTO / Patrick HERTZOG (Photo credit should read PATRICK HERTZOG/AFP/Getty Images)
Photo taken on July 14, 1997 shows Britain's Lady Diana taken by an unidentified young girl for a jet-ski ride off the property of her friend Dodi Al-Fayed in Saint Tropez, on the French Riviera. Diana, Princess of Wales, and her companion, the Egyptian millionaire film-producer Dodi al-Fayed, died in Paris early 31 August after a midnight car crash. / AFP PHOTO / Patrick HERTZOG (Photo credit should read PATRICK HERTZOG/AFP/Getty Images)
ST TROPEZ, FRANCE - JULY 17 1997: (FILE PHOTO) Diana, Princess of Wales and son HRH Prince William are seen holidaying with Dodi Al Fayed (not pictured) in St Tropez in the summer of 1997, shortly before Diana and Dodi were killed in a car crash in Paris on August 31, 1997. The inquests into both of their deaths are due to start in early 2004. (Photo by Michel Dufour/WireImage)
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Andersen says the iconic photograph of Diana alone on the diving board of Dodi's yacht says it all.

"She would be sitting in the boat alone, lost in her own thoughts, sitting on the end of a diving board," he said. "She was given into fits of depression and anxiety."

Still, there were reports that Dodi, the son of Egyptian billionaire Mohamed Al Fayed, had bought Diana an engagement ring.

"It was a $250,000 ring, I believe, that would be twice as valuable today," Andersen said. "He was going to ask her that night. She was going to reject him. She told her friends, 'Look, I need another marriage like a need a bad rash on my face.'"

74 PHOTOS
Princess Diana's life in photos
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Princess Diana's life in photos
Princess Diana wearing a tiara and diamond necklace on an official visit to Australia, April 12th 1983. (Photo by Tim Graham/Getty Images)
UNITED KINGDOM - JULY 01: An informal study of Prince CHARLES, the Prince of Wales, and Lady Diana SPENCER, whose wedding will take place at Saint-Paul's Cathedral, London on 29th July 1981. (Photo by Keystone-France/Gamma-Keystone via Getty Images)
LONDON - JULY 29: (FILE PHOTO) Prince Charles, Prince of Wales and Diana, Princess of Wales leave St. Paul's Cathedral following their wedding July 29, 1981 in London, England. (Photo by Anwar Hussein/Getty Images)
LONDON - JULY 29: Diana, Princess of Wales and Prince Charles ride in a carriage after their wedding at St. Paul's Cathedral July 29, 1981 in London, England. (Photo by Anwar Hussein/WireImage)
Prince Charles and Diana, Princess of Wales (1961 - 1997) pose together during their honeymoon in Balmoral, Scotland, 19th August 1981. (Photo by Serge Lemoine/Getty Images)
Princess Diana wearing a Jasper Conran suit during a visit to a community centre in Brixton, October 1983. (Photo by Princess Diana Archive/Getty Images)
PARIS, FRANCE: Britain's Princess Diana arrived in Paris Friday, 13 November, 1992, on a private three day visit she is making without her husband, Prince Charles. (Photo credit should read JOEL ROBINE/AFP/Getty Images)
HONG KONG, HONG KONG: Britain's Princess Diana stands with tennis players Michael Chang of the US (L) and Sweden's Jonas Bjorkman during the awards ceremony at the Hong Kong Open 23 April. Princess Diana, on a private visit to Hong Kong, watched as Chang defeated Bjorkman 6-3, 6-1 to win the tournament. AFP PHOTO (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)
The Princess of Wales visits Chinatown in Liverpool, April 1982. She is pregnant with Prince William, and wearing a pink wool maternity coat by Bellville Sassoon and a hat by John Boyd. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
WINDSOR, UNITED KINGDOM - JUNE 06: Princess Diana At Polo, Just Two Weeks Before The Birth Of Her First Child, Prince William. Wearing A Maternity Dress Designed By Fashion Designer Catherine Walker She Is Walking With Sarah Ferguson. (Photo by Tim Graham/Getty Images)
LONDON - JUNE 22: New born Prince William with Diana, Princess of Wales and Prince Charles leave St. Mary's hospital on June 22, 1982 in Paddington, London, England,. He was born in the Lindo Wing of the hospital on June 21. (Photo by David Levenson/Getty Images)
LONDON, UNITED KINGDOM - FEBRUARY 01: Princess Diana Holding Her Baby Son, Prince William, At Kensington Palace. (Photo by Tim Graham/Getty Images)
NEW ZEALAND - APRIL 18: Princess Diana And Prince William In New Zealand. (Photo by Tim Graham/Getty Images)
(FILES) This picture taken 17 June 1997 shows Diana, Princess of Wales, a key volunteer of the British Red Cross Landmine Campaign at Red Cross headquarters in Washington DC. Princess Diana may have survived her fatal Paris car crash in 1997 if French medical staff had not wasted precious time, a leading British surgeon indicated at her inquest 19 November 2007. AFP PHOTO/FILES/Jamal (Photo credit should read JAMAL A. WILSON/AFP/Getty Images)
The Prince and Princess of Wales visit Barmouth in Wales, November 1982. She wears a suede beret by John Boyd and a coatdress by Arabella Pollen. (Photo by Terry Fincher/Princess Diana Archive/Getty Images)
The Princess of Wales visits University College Hospital in London, December 1982. She wears a John Boyd hat and a velvet suit by Caroline Charles. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
LONDON, UNITED KINGDOM - FEBRUARY 01: Princess Diana And Prince Charles With Prince William And His Koala Bear Toy At Kensington Palace (Photo by Tim Graham/Getty Images)
Princess Diana (1961 - 1997) at the School of the Air, in Alice Springs, Australia, 30th March 1983. She is wearing a dress by Jan van Velden. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
AYERS ROCK, AUSTRALIA - MARCH 21: Prince Charles, The Prince Of Wales And Diana, Princess Of Wales Standing In Front Of Ayers Rock During Their Official Tour Of Australia (Photo by Tim Graham/Getty Images)
NEW ZEALAND - APRIL 18: Princess Diana During A Visit To New Zealand Wearing A Dress Designed By Fashion Designer Donald Campbell (Photo by Tim Graham/Getty Images)
MANUKAU - APRIL 19: Diana Princess of Wales meets firemen during a visit to Manukau, near Auckland, New Zealand during the Royal Tour of New Zealand on April 19, 1983. Princess Diana wore a suit designed by Jan Van Velden, with a hat by John Boyd. (Photo by David Levenson/Getty Images)
CANADA - JUNE 23: Princess Diana in Edmonton during an official visit of Canada (Photo by Tim Graham/Getty Images)
Princess Diana (1961 - 1997) leaving St Mary's Hospital, London with her new-born son Prince Harry, September 1984. She is wearing a red coat by Jan van Velden. (Photo by Terry Fincher/Princess Diana Archive/Getty Images)
VENICE, ITALY - MAY 5: (FILE PHOTO) (L-R) Diana the Princess of Wales holds her son Harry, whilst looking at Prince William held by his father Prince Charles on May 5, 1985 in Venice, Italy. Prince William will celebrate his 21st birthday on June 21, 2003. (Photo by Georges de Keerle/Getty Images) On July 1st Diana, Princess Of Wales would have celebrated her 50th Birthday Please refer to the following profile on Getty Images Archival for further imagery. http://www.gettyimages.co.uk/Search/Search.aspx?EventId=107811125&EditorialProduct=Archival For further images see also: Princess Diana: http://www.gettyimages.co.uk/Account/MediaBin/LightboxDetail.aspx?Id=17267941&MediaBinUserId=5317233 Following Diana's Death: http://www.gettyimages.co.uk/Account/MediaBin/LightboxDetail.aspx?Id=18894787&MediaBinUserId=5317233 Princess Diana - A Style Icon: http://www.gettyimages.co.uk/Account/MediaBin/LightboxDetail.aspx?Id=18253159&MediaBinUserId=5317233
LA SPEZIA, ITALY - APRIL 20: The Prince and Princess of Wales in La Spezia during a tour of Italy. (Photo by Tim Graham/Getty Images)
TWERTON ON AVON - MAY 31: Diana Princess of Wales meets girl guides outside the Poolemead centre for the Deaf on May 31, 1985 in Twerton on Avon, Bath, Avon. (Photo by David Levenson/Getty Images)
CANADA - JULY 01: Diana Princess of Wales celebrates her birthday in Canada (Photo by Tim Graham/Getty Images)
Princess Diana (1961 - 1997) inspects a guard of honour during a two-day visit to the 1st Battalion, the Royal Hampshire Regiment in Berlin, October 1985. She is wearing a pink and black suit by Victor Edelstein and a hat by Frederick Fox. (Photo by Lucy Levenson/Princess Diana Archive/Getty Images)
UNITED KINGDOM - OCTOBER 04: Diana, Princess of Wales with her sons, Prince William and Prince Harry, at the piano in Kensington Palace (Photo by Tim Graham/Getty Images)
KLOSTERS, SWITZERLAND - FEBRUARY 06: Prince Charles With Princess Diana On A Ski-ing Holiday Together. The Princess Is Wearing A Red 'head' Ski Suit And A Headband And She Is Holding A Pair Of 'dynamic' Skis. The Prince Is Wearing A Blue Ski Suit And Carrying A Pair Of 'k2' Skis. (Photo by Tim Graham/Getty Images)
VIENNA - APRIL 16: Diana, Princess of Wales, wearing a sapphire diamond and pearl necklace, attends a banquet on April 16, 1986 in Vienna, Austria (Photo by Anwar Hussein/Getty Images)
TETBURY, UNITED KINGDOM - JULY 18: Princess Diana Carries Prince Henry (harry) On Her Shoulders At Highgrove. (Photo by Tim Graham/Getty Images)
UNITED KINGDOM - AUGUST 22: PRINCESS DIANA ON BOARD HMS TRAFALGAR NUCLEAR SUBMARINE MEETING THE CREW DURING A VISIT TO THE NAVAL SUBMARINE BASE IN FASLANE IN THE FIRTH OF CLYDE, SCOTLAND (Photo by Tim Graham/Getty Images)
SANDHURST - APRIL 10: Diana, Princess of Wales wears a Catherine Walker white suit with drum majorette gold frogging and epaulettes and a graham smith hat for her visit to the Sandhurst Military Academy on April 10, 1987 in Sandhurst, England (Photo by Anwar Hussein/Getty Images)
Princess Diana and Prince Charles of Wales attending a Lionel Richie concert at Wembley Arena, London, November 7th 1987. (Photo by Dave Hogan/Getty Images)
The Prince And Princess Of Wales At A Prizegiving, At Polo, Smiths Lawn, Windsor. (Photo by Julian Parker/UK Press via Getty Images)
Diana, The Princess Of Wales, And Prince William, At A Polo Match, Smiths Lawn, Windsor. (Photo by Julian Parker/UK Press via Getty Images)
ABERDEEN, SCOTLAND - AUGUST 14: Princess Diana With Her Sons Prince William And Prince Harry At Aberdeen Airport. (Photo by Tim Graham/Getty Images)
MAJORCA, SPAIN - AUGUST 10: Diana, Princess of Wales with Prince Harry on holiday in Majorca, Spain on August 10, 1987. (Photo by Georges De Keerle/Getty Images)
Princess Diana (1961 - 1997) driving an armoured vehicle with the Royal Hampshire Regiment at Tidworth, Hampshire, 23rd June 1988. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
CHAMBORD, FRANCE - NOVEMBER 09: Diana, Princess of Wales, wearing a white and blue lace and sequin evening coat-dress designed by Catherine Walker for a dinner at the Chateau de Chambord during her official visit to France. (Photo by Tim Graham/Getty Images)
The Princess of Wales at the museum in Kuwait City, March 1989. She is wearing a gold embroidered bedouin gown that was presented to her with a silver tea set to mark the occasion of her visit. (Photo by Jayne Fincher/Getty Images)
The Princess of Wales with her sons William and Harry on the chair lift during a skiing holiday in Lech, Austria, April 1991. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
LONDON, ENGLAND - MARCH 7 Diana, Princess of Wales attends the Premiere of Dangerous Liaisons, in London's West End, on March 7, 1989 in London, United Kingdom. (Photo by Julian Parker/UK Press via Getty Images)
ABU DHABI, UNITED ARAB EMIRATES - MARCH 15: The Prince And Princess Of Wales attend a desert picnic on March 15, 1989 in Adu Dhab, United Arab Emirates. (Photo by Georges De Keerle/Getty Images)
BATH - MAY 30: (FILE PHOTO) Prince William, Diana, Princess of Wales, Prince Harry and Charles, Prince of Wales, attend the wedding of the Duke of Hussey's daughter in May, 1989 in Bath, England. (Photo by Anwar Hussein/Getty Images)
LONDON, UNITED KINGDOM - SEPTEMBER 11: Princess Diana With Her Sons Prince William And Prince Harry Standing On The Steps Of Wetherby School On The First Day For Prince Harry. (Photo by Tim Graham/Getty Images)
INDONESIA - NOVEMBER 05: The Princess Of Wales Playing Bowls At Sitanalia Leprosy Hospital In Indonesia (Photo by Tim Graham/Getty Images)
NIGERIA - JUNE 3: (FILE PHOTO) (PRINCESS DIANA RETROSPECTIVE 17 OF 22) The Princess of Wales speaks with Nigerians circa 1990 during a visit to Nigeria. Princess Diana, 36-years-old, died with her companion Dodi Fayed, 41-years-old, in a car crash August 31, 1997 in Paris, France. Fayed was the son of an Egyptian billionaire. (Photo by Georges De Keerle/Getty Images)
The Princess of Wales and the Queen Mother in an open-topped landau on their way to the Royal Ascot race meeting, June 1990. The Princess wears a Catherine Walker suit and a Philip Somerville hat. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
The Princess of Wales walks amongst crowds of children waving flags during her visit to Cullompton in Devon, September 1990. She is wearing a Catherine Walker dress. (Photo by Terry Fincher/Princess Diana Archive/Getty Images)
WASHINGTON, UNITED STATES - OCTOBER 05: Princess Diana With Mrs Barbara Bush At The White House (Photo by TIM GRAHAM/Getty Images)
Diana, The Princess Of Wales Takes Her Sons, Prince'S William, And Harry Out On The Boat ' Maid Of The Mist ' To View Niagara Falls. (Photo by Julian Parker/UK Press via Getty Images)
LONDON, UNITED KINGDOM - NOVEMBER 18: Diana Princess of Wales attends the Premiere of Hot Shots, in London's West End, on November 18, 1991 in London, United Kingdom. (Photo by Julian Parker/UK Press via Getty Images)
The Princess of Wales (1961 - 1997) talks to children at the British school in Seoul during a visit to Korea, 1992. (Photo by Linda Grove/Getty Images)
INDIA - FEBRUARY 11: Diana Princess of Wales sits in front of the Taj Mahal during a visit to India (Photo by Tim Graham/Getty Images)
CALCUTTA;INDIA - FEBRUARY: Princess Diana the Princess of Wales holds hands with a nun at Mother Teresa's Hospice in Calcutta during her visit to India in February of 1992. (Photo by Anwar Hussein/Getty Images)
GIZA, EGYPT - MAY 12: Diana Princess of Wales visiting the Pyramids in Giza during an official tour of Egypt. (Photo by Tim Graham/Getty Images)
EGYPT - MAY 13: Diana, Princess of Wales in teh Alazhar Mosque, Cairo, Egypt (Photo by Tim Graham/Getty Images)
LONDON, ENGLAND - JUNE 13: Diana, Princess of Wales, Queen Elizabeth, The Queen Mother, and Prince Harry, attend the Trooping The Colour Ceremony on June 13, 1992 in London, United Kingdom. (Photo by Julian Parker/UK Press via Getty Images)
Princess Diana (1961 - 1997) on a skiing holiday in Lech, Austria, March 1993. (Photo by Jayne Fincher/Getty Images)
Princess Diana (1961 - 1997) meets local people during a field visit to Red Cross projects in the remote mountain villages of Nepal, 3rd March 1993. (Photo by Princess Diana Archive/Getty Images)
Diana Princess Of Wales, Prince William & Prince Harry Visit The 'Thorpe Park' Amusement Park. (Photo by Julian Parker/UK Press via Getty Images)
Princess Diana (1961 - 1997) during a visit to the Red Cross borehole project for refugees in Zimbabwe, July 1993. She is wearing a safari suit by Catherine Walker. (Photo by Jayne Fincher/Getty Images)
Princess Diana (1961 - 1997), Prince Harry, Prince William and Prince Charles at a parade in the Mall, London, during V.J. Day commemorations, August 1994. Diana is wearing a Tomasz Starzewski suit and a hat by Philip Somerville. (Photo by Terry Fincher/Getty Images)
UNITED KINGDOM - MAY 20: Princess Diana Reviewing The Troops Of The Princess Of Wales Regiment In Kent. The Princess Is Wearing A Pink Suit Designed By Versace. (Photo by Tim Graham/Getty Images)
Diana, Princess Of Wales Attends The Serpentine Gallery Summer Party. (Photo by Julian Parker/UK Press via Getty Images)
LONDON -OCTOBER 08: Diana, Princess of Wales laughs as she visits the London Lighthouse, the HIV/Aids charity, to help launch it's £1.5 million Capital Appeal on October 08, 1996 in London, England . (Photo by Anwar Hussein/Getty Images)
Diana, Princess of Wales at Costume Institute Gala at Metropolitan Museum of Art for a benefit ball. (Photo By: Richard Corkery/NY Daily News via Getty Images)
ANGOLA - JANUARY 15: Diana, Princess of Wales wearing protective body armour, visits a minefield being cleared by the chirty Halo in Huambo, Angola (Photo by Tim Graham/Getty Images)
WINDSOR, UNITED KINGDOM - MARCH 09: Official Portrait Of The Royal Family On The Day Of Prince William's Confirmation. Front Left To Right - Prince William, Princess Diana, Prince William, Prince Charles And The Queen. Back Left To Right - King Constantine, Lady Susan Hussey, Princess Alexandra, Duchess Of Westminster And Lord Romsey (Photo by Tim Graham Picture Library/Getty Images)
GREAT BRITAIN - JUNE 06: Diana, Princess of Wales crouching down to embrace a pupil at the Shri Swaminarayan Mandir in Neasden (Photo by Tim Graham/Getty Images)
Diana, The Princess Of Wales Visits Washington, Usa.Gala Dinner Held By The American Red Cross, To Raise Funds For Landmine Victims Around The World. . (Photo by Mark Cuthbert/UK Press via Getty Images)
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But Debbie Gribble, who worked as Diana and Dodi's stewardess aboard the Fayed family's 200-foot yacht, The Jonikal, believes their relationship was the real deal.

"They appeared very much in love, yes," she said in a previous interview.

Gribble, who was on three of the couple's cruises, remembers William and Harry, then just 15 and 12, joining them on the yacht.

Read: Donald Trump 'Stalked' Princess Diana, Saw Her as the 'Ultimate Trophy Wife,' Friend Says

"They would come down to the crew's mess and sit down and chat with the crew and the bodyguards and help themselves to ice cream and wash up their plates," she recalled.

But at the end of the summer, on Aug. 31, 1997, the world learned the devastating news that Diana was gone, killed in a car crash in Paris.

"Her death was kind of a surreal event at the time and it still seems unreal," Andersen said.

Watch: William and Harry 'Haunted' By Last Phone Call With Princess Diana

 

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