Porn star James Deen might be known for his sexual abilities on-screen, but he isn't sharing his talents with his "The Canyons" co-star Lindsay Lohan off-screen -- or so he tells Animal New York.

“I can definitely, honestly say Lindsay Lohan and I are not having sex!," he told the website, adding, "[If I was] I think I would tell everybody."

The inevitable rumors about the two began as soon as they were photographed grabbing a smoke together outside a restaurant. And though Deen beds women for a living, he says things with Lohan are strictly professional.

"I don’t know anything about her except for that she’s a really nice, down-to-earth, normal twenty-five-year-old girl," he told the magazine (for the record, Lohan turned 26 on July 2). "We went to a business dinner and she was very professional. She drank coffee and water. Then she had to call for a car because she couldn’t walk ten feet from the door because of the paparazzi.”

Deen will play Lohan's boyfriend in Bret Easton Ellis' "The Canyons," and though there were reports the film would require graphic sex scenes between the two, Deen is quick to downplay the on-screen action.

"It’s all necessary to the story. This is not an adult film. We are not trying to arouse people. If someone does get aroused, well, it happens. It’s like 'American Psycho,' 'Less Than Zero.'" he told the website, making reference to Ellis' other novels which have been turned into films. "It’s not graphic sex for the sake of graphic sex. In the script you don’t see anything like, ‘You see [Lindsay's character] turn around and flash her boobs!’”

"The Canyons" is scheduled to start filming on July 9, and it will mark Deen's first foray into mainstream fare. Deen is taking the role seriously and told Animal New York he's enrolled in acting classes and will take a break from the adult industry while filming.

"I will definitely take time off to do this. My intention is that from the day we start rehearsing to the day that the movie is wrapped, I will be giving this movie my full attention," he said, adding that he's never not working. “Uh, I don’t. I’ve never really gone without working. My life is pretty much a perpetual vacation, so I never felt the need to take time off. This will be the first time in eight years.”