MadHollywood.com

Casting Lindsay Lohan and porn star James Deen in the same movie is a sure way to start some rumors...

After wrapping up her role for "Liz & Dick" two weeks ago, LiLo wasted no time hopping into bed with porn star James Deen - for their upcoming film "The Canyons."

Lohan and Deen, 26, play the leads in a film about the "dangers of sexual obsession and ambition" among a group of 20-something youngsters who are trying to make it in LA.

According to sources the pair had instant on-screen chemistry and collaboration.

Deen has even praised his costar for her professionalism and repeatedly calls her "amazing" in on his blog.

"My favorite part of the day was sitting with Lindsay Lohan and our director Paul Schrader and planning out how we would shoot our love scenes in the movie," he wrote.

Deen also pointed out that he and Lohan had many discussions about how to properly act in their love scenes together.

"Doing porn is easy, but the sex scenes in the movie are obviously not particularly sexual scenes."