But soon he may be known as Drew Barrymore's guy. According to People magazine, the Live Free or Die Hard star was recently spotted "making out" with Drew, his co-star in the upcoming movie He's Just Not that Into You.

The pair spent Labor Day in Las Vegas at Jet Nightclub, where an onlooker said they were "all over each other, making out the entire time." Later in the week, they went to a sushi restaurant together with friends in Los Angeles.

A friend of Barrymore's told People, "The relationship is very new." Justin and Drew were first seen together socially at Chateau Marmont on August 28.

Since her break up earlier this year from longtime boyfriend Fabrizio Moretti of the Strokes, Drew has been seeing plenty of action. In addition to Justin, she has been linked to director Spike Jonze and Zach Braff.