Jennifer AnistonJennifer Aniston is reportedly inseparable from her Traveling co-star Aaron Eckhart sparking rumours of a romance on the film set in Vancouver.

Thank You for Smoking star Aaron is said to have personally suggested Jennifer for his leading lady in the romantic drama but an on-set source has told the Daily Mail his interest may not just be professional.

The source revealed: “They’re getting along so great that everyone on the set is gossiping about something more going on between them. They’re just so in sync all the time.”

“And Jen’s entire reason for doing this movie was Aaron. She’s wanted to work with him for years and was completely flattered that she was his first choice to be the leading lady in this movie.”

“I think the fact that both of them have been single for a couple of months is contributing to the chemistry they have on this film, even when they aren’t shooting.”

“They genuinely enjoy each other’s company. But if they’re actually hooking up, they’re doing it as quietly as possible.”

Jennifer’s relationship with The Break-Up co-star Vince Vaughn ended at the end of 2006 and she had a brief fling with model Paul Sculfor last year. Aaron ended his relationship with his long-term girlfriend, country musician Kristyn Osborn late last year.