An unauthorized book detailing a Hollywood producer's former life as an Israeli secret agent says he witnessed Brad Pitt and Angelina Jolie fall for each other on the set of "Mr. & Mrs. Smith," while Pitt was married to Jennifer Aniston. According to "Confidential: The Life of Secret Agent Turned Hollywood Tycoon Arnon Milchan,"by Joseph Gelman and Meir Doron, "Milchan introduced Pitt to Jolie and immediately sensed that there was a spark between them."
