As Sienna Miller and Ben Affleck get touchy-feely on set, Is romance in the air?

Sienna Miller is living everyone’s dream life. Back in October, she was all over her Burntco-star Bradley Cooper on the red carpet in London, then heat reader Meg spotted her acting like a couple with her ex, actor Tom Sturridge, atNewark Airport in the US. And now, Sienna’s been spotted holding hands with recentlysingleBenAleck on the set of their new prohibition era movieLive ByNight.Butthisisn’tacting because while Sienna’s in full20s costume, Ben’s not. This is an of-camera hand-hold. Interesting, right? Especially as, when Brad Pitt and Angelina Jolie first got together on the set of Mr & Mrs Smith, they were caught out by… a photo of them holding hands onset. Sienna and Ben have insane chemistry, says a movie insider. He’s been going through a tough time and he also co-wrote and is directing the movie, so the pressure’s on. But Sienna can really make him laugh. Ben thinks she’s great! Sienna, we are jealous. Some girls have all the luck. And all the men.