(dailymail.co.uk) - Kate Middleton and Prince William rekindled their romance during a summer party at a 17th-century mansion, according to a report today.
The couple, who had split up in March this year, are also said to have taken a secret holiday together after the break-up during which they developed 'a new understanding' about the future of their relationship.
The claims, made in today's Evening Standard newspaper, shed new light on the events leading up to the royal couple's break-up and their reunion.
According to the newspaper, Kate and William split because of his 'immaturity'. In the days before the split, the Prince was photographed at various night spots in the company of several beautiful young women. He was also prone to regular nights out with his friends.
One friend told the Standard: "When they went on a skiing holiday in February, William insisted on taking the gang along. You had people like Thomas van Straubenzee and Guy Pelly there, all keen to do some hard partying.
"Kate could hardly get a word in. There were blazing rows and William responded by asserting what he believed was his right to go on benders with his friends. There was awkwardness between them at the Cheltenham Festival and she attended the Gold Cup alone."
It is claimed that months after the break-up the pair were reunited at a party at 17th Century mansion Upton Viva, thrown by Sam Waley-Cohen, son of racehorse breeder and trainer Robert Waley-Cohen.
Guests reported that Kate and William were seen having an intimate conversation at the event.
"The body language said it all," one said.
The report also claims the pair took a secret holiday in Desroches in the Seychelles: a private island resort where the local police and military were instructed to make sure they were not disturbed.
William and Kate are said to have 'made an agreement that could underpin their future together' and talked about 'two serious threats to their happiness' - William's liking for lads' nights out and the paparazzi.
According to the newspaper, leading London lawyers have been consulted over the hounding of Kate by photographers, although they have been told that there is little that can be done under current British law.
But the royal couple's relationship is about to enter a testing time as William prepares to work for both the Royal Navy and Royal Air Force. The newspaper speculates that William and Kate will announce their engagement in 2009 - when the Prince's military service is complete - and even goes so far as to predict a royal wedding in 2010.