Former royal butler Grant Harrold is offering new insight into Prince Harry's relationship with his sister-in-law, Princess Kate Middleton. "They involved him," Harrold, 47, wrote in his upcoming book The Royal Butler: My Remarkable Life of Royal Service, according to an excerpt published by The Telegraph on Monday, August 18. "He used to go out with Kate. William would be away, and Kate and Harry would be off doing stuff together." Per Harrold, the Duke of Sussex would "go shopping" and "go to pubs" with Kate, now 43.