Article continues below advertisementThough Prince Andrew's scandals have alienated him from the monarchy, a royal expert revealed he's been on bad terms with nephew Prince William for years.According to Hilary Fordwich, their tension stems from Andrew's animosity toward the Prince of Wales' wife, Kate Middleton.Article continues below advertisementThe Beginning of Prince William and Prince Andrew's RiftSource: megaA royal expert claimed Prince William and Prince Andrew's feud started due to Andrew's 'jealousy' over Kate Middleton's popularity.