Prince William and Kate Middleton are not jealous of each other
Prince William's anger issues are being exposed by royal journalist.
Robert Jobson writes that Diana's eldest son "could whine a little" whenever he is upset.
A former courtier reportedly told Mr Jobson: "They both have quite the mood swings, like Diana did. She can be your best friend one minute and your worst enemy the next."
Insiders revealed that the advisory "check which direction the wind is blowing" before speaking to William.
Along with Kate, the Duke of Cambridge has often been known to have heated debates.
The Insider Says: "He can giggle a little when he loses it. It's fair to say that the Duke and Duchess give as much as they sound off as a result of their disagreement.
"But they know each other so well, it usually wears off quickly — and that, overall, has a huge calming effect on him."