Sparks Fly for Owen Wilson & Jennifer Aniston

Step aside, Kate Hudson!

According to a Star source, Owen Wilson has been cozying up to Jennifer Aniston in Miami, where they're currently playing husband and wife on the set of the upcoming film Marley and Me.

"The hugging didn't end when the cameras stopped rolling," one crew member tells Star. "They were very flirty together, far more than you would expect. In between takes they were hanging onto each other. They are very friendly."

Before they even started filming, Owen and Jen started bonding. Back in October, Star reported that they were speaking regularly by phone and Jen sent Owen some of her favorite books, including The Power of Now. At the time a source close to the actress said, "Owen has come to rely on Jen's phone calls."

Now, by all accounts, Jen and Owen, both 39, are having the time of their lives working and hanging out together.

"Jen wasn't looking forward to it at first because she was worried about working with Owen, but he has turned out to be a real surprise," an L.A. friend tells Star. "She's finding out that he's a terrific guy who's fun to be around."

Marley & Me, based on John Grogan's memoir about his beloved Labrador retriever, is Owen's first major role since his suicide attempt last August.

And it looks like his chemistry with Jen was instantaneous! "Jen is known for being a recluse on set," says the friend. "But she's having so much fun hanging out with Owen. She's just really relaxed and happy, which is nice to see."

For more fabulous photos of Owen & Jen's beach romp, pick up the March 24 issue of Star on sale March 12.