And by the looks of things, the pair appear to be getting closer than ever.
Filming a scene for romantic comedy The Bounty, Jennifer is handcuffed by her co-star as she presses up against him.
Chemistry: Gerard Butler handcuffs Jennifer Aniston while filming The Bounty in New York yesterday
Hard to fake: Despite denying rumours, the pair appear to be getting
closer than ever
closer than ever
Judging by their body language on set, that kind of chemistry is hard to fake - even for the most talented of actors.
And it seems Jennifer and Gerard have taken their working relationship to the next level after they were reportedly spotted holding hands at a New York hotel.
A source told People.com: 'Jen and Gerry went out on Saturday night,
' They had cocktails and … They were hand in hand.'
Attached: Jennifer doesn't appear to mind being chained to her co-star
Cosy: Gerard puts a protective arm around his leading lady
Her spokesperson said: 'Jennifer was out with many others from the film and they were not holding hands,
'Gerry was one of the many people there.'
Private moment: Gerard can't seem to keep his hands off Jennifer as they take a break between takes for a make-up retouch
A source told RadarOnline.com that the 'lovey-dovey' couple have been seen stealing kisses in between scenes and are spending their free time in Jennifer's trailer.
Gerard, 39, has been quick to admit he loves working with Jennifer, saying: 'She is one classy lady.
'Every day I go to work with her, I'm always surprised about how cool, easy and down to earth and real she is.'
Laid-back chic: The actress appeared happy and relaxed in a maxi dress and flip flops
There's still a few more weeks to roll on the set of The Bounty - but there'll be no rest for busy Jen after that.
It will be hard for her to maintain a romance during her next project is The Goree Girls, a 1940s-set musical centred around a group of imprisoned female country-and-western performers.
Not only is she to star in the movie but she's producing it too.