As the summer of 1996 wound down, John F. Kennedy Jr. and Carolyn Bessette started telling their closest circle the big news. They invited their friends Billy and Kathleen Noonan over to their Hyannis Port home to have a toast using the old glassware John’s parents had been given on a family trip to Ireland. As soon as Billy saw the family crest-inscribed cups, he knew John and Carolyn were about to make a big announcement. He knew they were getting married. John and Billy eventually went up to