Jan. 6: Brad and Jen play the part of the happy couple, strolling on an Anguilla beach during their vacation with pals Cox and Arquette. One day later, however, they would announce their separation, and the next day Aniston would be seen wiping away tears as she boarded a plane for home. Photo by: INF
Signing Off| Brad Pitt, Jennifer Aniston
In short, there was a funhouse-mirror aspect to the whole shoot (which Aniston didn't know about, a source says). How could anyone see those five boys and not think about the flawless marriage that had now proved unsalvageable, and childless, after less than five years? Or the rumors (denied by all parties) that Jolie and Pitt had fallen for each other during the movie's protracted shoot? Even though Pitt and Jolie were also photographed for steamier shots minus the children, "the only time Brad and Angelina came in contact was to take a picture," says the onlooker. Otherwise they kept to separate trailers (Jolie had toted her son Maddox, 3, along with her) and separate rooms at a nearby hotel. Yet "there was definitely that wink-wink feeling on the set."

At one point a member of the crew tried to set the mood by playing Frank Sinatra's "Love and Marriage" on the stereo. "The whole set was laughing – even Brad and Angelina," says the source. "They just kind of snickered."
Get up-to-the-minute celebrity news and photos on your cellphone, iPhone or Blackberry at www.people.com!