A woman has claimed Prince Harry gave her the "most passionate kiss" she ever had when he was 21 and she was 34.
Catherine Ommanney claims she was separated from her ex-husband Stephen when she met the Duke of Sussex at the Art Bar in London in May 2006.
At the time, Harry was in a relationship with Chelsy Davy but Ms Ommanney said she is not sure whether the couple were taking a break when she met the prince.
The woman, who is 13 years older than Prince Harry and was a mother-of-two when the pair met, has claimed she had a one-month fling with him and they met in private clubs around the capital.
She said she decided to speak out on their brief romance after learning that Harry, 38, was writing about his ex-girlfriends in his upcoming memoir, Spare.
The divorcee, now 51, believes she will not be mentioned in the book due to their age gap, as she told The Sun on Sunday : "I doubt I will be in Harry's book as a prince can't run off with a 34-year-old mother-of-two, it's just not the done thing."
Ms Ommanney, who once starred in the American reality TV show The Real Housewives of DC, described her fling with the prince as the "time of my life", but admitted she did not want an actual relationship as he was much younger than her.
Recalling the first time they met, Ms Ommanney said Harry - that she described as "lovely" and "intelligent" - was accompanied by three Royal Protection Officers at the bar and they were around while they had conversations.
She said when everyone started leaving the bar at around 11pm, Harry invited her to join him in a Range Rover parked outside and they were driven to the VIP area of the Eclipse nightclub in South Kensington.
They then went to another club but she started feeling hungry so she asked Harry if he could make a good bacon sandwich, to which he reportedly replied: "I make an excellent bacon sandwich."
Ms Ommanney claims she went to Harry's friend's place in Chelsea and while she shared a cigarette with the prince, he opened up to her, also mentioning his strong bond with the late Queen Elizabeth.
She added: "We went upstairs to the bathroom and started mucking about like teenagers, singing into toothbrushes like they were microphones. We got into the bath with our clothes on and one of our friends took a photo on my phone.
"Harry and I went to the kitchen and he made a great bacon sandwich. We sat in the kitchen chatting for ages and we both had the giggles. We started play fighting and I think we were wrestling on and off for about 15 minutes when I told him I needed to go home."
She said she was "speechless" when Harry kissed her, claiming: "It was then that he lifted me by my waist off the floor and held me against the wall. He gave me the most incredible, passionate kiss I have ever had in my life. I was absolutely speechless."
Ms Ommanney said Harry insisted on taking her back to the home she shared with her daughters in Battersea that evening.
She claimed they continued texting and they met again a week later at a bar in Kensington, where they shared another kiss and the prince told her she was beautiful.
After two more dates, however, Harry changed his number and they did not meet for years until they bumped into each other at a polo match in Barbados in 2009.
She said it is a shame they did not remain friends as she appreciated Harry's "sense of humour" and they had great conversations.
Ms Ommanney said she hopes the prince is happy and "has found some freedom" now in California with his wife Meghan Markle and two children Archie and Lilibet, as that is something he was looking for at the time.
She described Harry as "a very brave, charismatic, incredibly funny, intelligent and lovely human being" and added she wishes him happiness and success.
Harry's book will be published on January 10 and will cost £28 for a hardback, with the audio book, voiced by Harry himself, priced at £20.
The book was set to come out this autumn but the date was pushed back as a mark of respect following the death of the Queen.
The 416-page memoir, ghost written by American novelist J.R. Moehringer and complete with a striking cover image of Harry, will contain "raw, unflinching honesty", according to the publishers.
