United Kingdom, Feb. 15 -- Prince William was left in "a state of disbelief" after Catherine, Princess of Wales was diagnosed with cancer.

The future king was reeling after the disease was found following his wife's abdominal surgery in 2024, and his friends found it "deeply emotional" watching him process his own feelings while doing everything he could to support Catherine.

In a new book, William and Catherine: The Monarchy's New Era: The Inside Story, a friend told author Russell Myers about the prince's reaction: "It was like being hit by a bus, sudden, brutal, and completely disorienting. One moment life was normal, and the next, everything changed. He worships her, truly. She's his world, and when the diagnosis came, it was as if ...