reporter: and then, paul still directing, it s down on his knees. sweetheart, will you marry me? yes! reporter: and there it was. mccartney joking he had been booked to play at the wedding maybe even that song when i m 64 which he wrote at the age of 16, when he was just a kid. john donvan, abc news, washington. when i m 64 i think paul mccartney will live forever. yes, he will. well, don t miss our updates on facebook at wnnfans.com. coming up more from abc. announcer: this is abc s world news now, informing insomniacs for two decades.