Prince William and Kate Middleton tried to keep their love under wraps at first. According to royal expert Robert Jobson, the couple's pal was the first to tell their friend group that the two were dating during a game night. "A revealing moment occurred during a dinner party with friends attended by Carly Massy-Birch," the author wrote in his book, Catherine, the Princess of Wales, via People. Kate Middleton and Prince William leave Boujis Nightclub in 2007.