Are Pippa Middleton and Prince Harry in a secret three-month romance?

IT all sounds rather too much like a plot dreamed up in a Hollywood movie, but it was claimed on Wednesday night that Prince Harry and Pippa Middleton are in a budding romance. It's not a secret any more though!

The Prince, 31, and Miss Middleton, 32, were inevitably thrown together at their siblings' wedding in 2011 at which she acted as maid of honour and 31-year-old Prince Harry was his brother's best man.

"There's always been sexual tension between them, even when they were dating other people", a source told the magazine. I bet he times his thrusts so they match the beat, but let's not dwell on that because I'm as bad as OK! given the opportunity.

Eventually, Prince Harry made a decision to stop in his efforts to finally land Pippa Middleton, and they eventually both went on to date other people, with Pippa dating Nico Jackson for three years, and Harry dating Cressida Bonas and Chelsy Davy on and off for an extended period too.

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Reuters Britain's Prince Harry and Pippa Middleton on the balcony of Buckingham Palace, following the wedding of Prince William and Kate Middleton at Westminster Abbey in London on April 29, 2011.

"At one point, Kate went to check her make-up and found them snogging in a bathroom", the source reportedly said, adding that Kate Middleton was not happy about the incident.

The publication doesn't indicate whether the two got frisky after such a creamy, carbohydrate-heavy dinner that Harry cooked to set the mood, though it does indicate that Pippa started thinking of him less as a fling and more as a true romantic partner.

However, Pippa was forced to decline his advances for fear of further upsetting her sister, the Duchess of Cambridge. Harry and Pippa were said to have grown closer after her split with Jackson and this is what has fueled the speculations of their three-month old relationship. They sipped wine and then ate a pasta carbonara that he'd prepared himself'. Additionally, OK! revealed that William and Kate have even caught the couple red-handed.

Then there was that rumour the charming prince and Harry Potter star Emma Watson were together.

Daily Mail Online has reached out to the Palace for comment.

It was only in October that Pippa and Jackson parted ways and Harry ended his relationship with Bonas in 2014.