Ben Affleck and Sienna Miller were reportedly spotted holding hands after the cameras were turned off on the set of their new movie "Live by Night," sparking rumors that the two might be romantically connected.

According to Us Weekly, the 43-year-old Affleck and the much younger Miller were recently spied hanging out together on the studio lot where the 1920s crime flick is being shot and directed by the Academy Award-winning actor.

Both Affleck and Miller have recently ended longtime relationships with their significant other, with Affleck now rumored to be headed to divorce court after pulling the plug on his decade-long union with Jennifer Garner.

Miller, meanwhile, separated from boyfriend Tom Sturridge over the summer.

Affleck and Miller were also recently spotted sharing laughs over dinner. The direction of the film requires the two to share several romantic scenes, including a tender kiss that was shot in Boston late last month.

The two megastars would hardly be the first Hollywood co-stars to go from engaging in a make believe romance to the real thing in less time than it takes to shoot a movie.

Back in 2004, Brad Pitt and Angelina Jolie were spotted holding hands on the set of "Mr. & Mrs. Smith." The two now have six kids together and were married in 2014. At the time of the filming, Pitt was married to "Friends" actress Jennifer Aniston.

In "Live By Night," Affleck plays a the son of a Boston police captain who later turns to a life of crime as a notorious gangster. His marriage to Garner unraveled amid rumors he had an affair with Christine Ouzounian, the nanny of his three kids. Affleck denied all the rumors, but at one point, Ouzounian was rumored to be considering writing a tell-all book about their time together.