Kirsten Dunst is reportedly dating Ryan Gosling.

The 'Spider-Man' actress - who recently left rehab after being treated for an undisclosed problem - has been spending a lot of time with her 'All Good Things' co-star, sparking rumors they are more than just friends.

A fellow diner who saw the pair enjoying a romantic meal at New York's Freeman's restaurant on Saturday said: "They were definitely acting like they were on a date. They lingered there for hours."

Last month, it was claimed Kirsten was dating a fellow patient at Utah's Cirque Lodge rehab center.

A source said: "The staff have asked the two of them to separate many times. She sits on his lap while smoking cigarettes and they often take walks together."

"He has even phoned his mother and asked her to send Kirsten flowers from him. He is trying to be as romantic as it is possible to be in rehab."

Kirsten - who split from Razorlight frontman Johnny Borrell last year - previously dated Jake Gyllenhaal before splitting from him in 2004.