Did Prince William really have an affair and ruined his marriage to Kate Middleton? Early this year, several reports came out alleging that the Duke of Cambridge had a relationship with their neighbor Rose Hanbury. 

Fans discussing this controversy on Quora believe that the rumored affair might be the real reason why Prince William and Prince Harry allegedly fought and drifted apart. Only, the story made it out to be about Prince Harry's relationship with Meghan Markle as a cover-up.

According to a commenter in the forum, the tension between the brothers didn't involve Prince Harry's grudge over Prince William for suggesting he should delay his engagement to Meghan. Apparently, it made more sense for the princes to be feuding because Prince Harry was disappointed in Prince William's affair. 

The commenter went on to say that Prince Harry has been used as a decoy to take the criticisms and protect his brother's image, who will be the future King of England. Prince Harry and Meghan's current controversies with the British tabloid press was "probably blown out of all proportion to hide William's involvements," the commenter said.

However, other participants in the discussion said that they do not believe the rumors that Prince William cheated on Kate Middleton. The Duke of Cambridge looks like a devoted husband and father to their three kids and won't likely inflict the same pain he experienced as a child, with his parents' divorce, to his own children. 

Prince William and Kate Middleton have also been together for nearly two decades. Though they had breakups during their dating phase, it usually didn't last for a few weeks because Prince William is lost without Kate, one royal observer said.

Kensington Palace refused to officially comment on the rumors about the affair, however, insiders told The Daily Beast that the stories about Prince William and Rose are "totally wrong and false." The news outlet also reported that a British publication was served legal warnings by lawyers of the royals for publishing the false story.  

Rose, the Marchioness of Cholmondeley, is married to David Rocksavage, the 7th Marquess of Cholmondeley who is 23 years older than her. Reports cited that this marriage was on the rocks before the affair, allegedly, happened.

She was a familiar fixture at parties and banquets with the royals, aside from being Kate Middleton's good friend. However, the reports also alleged that the two had a falling out and that's when the rumors of the affair began.