It is rumored that Iron Man 2 star Scarlett Johansson could be dating Hangover actor Justin Bartha.

The New York Post's Page Six has revealed that Johansson has been spotted cozying up to the hunk. Rumor has it that Johansson attended a preview of off-Broadway's All new People starring Bartha, 33, on Saturday, and were photographed together backstage.

Johansson, 26, was dating Sean Penn, 50, up until about month ago. She split from ex-husband Ryan Reynolds last year.

The Post said the Johansson and Bartha were reportedly completely engrossed in each other during a cast dinner.

There were about 15 people at the table, but Scarlett and Justin sat next to each other and talked all night, a source told the paper. The source later added that the two seemed pretty fascinated with each other and only talked to each other.

It looked sometimes flirty, but also they seemed to be involved in a deep discussion, the source told the Post.

Bartha is also fresh out of a relationship. He ended a two-year relationship with Ashley Olsen in March.