Scarlett Johansson has apparently struck up a new romance with a mystery man.

The Hollywood starlet was pictured holding hands with the gentleman who RadarOnline claims to be an advertising executive called Nate.

The 27-year-old actress had a big smile on her face as she strolled through The Big Apple with her older beau.

She wrapped her arms around his waist and seemed very happy to be in his company during their afternoon date. But insiders say that it is still early days in the relationship and they are trying to be discreet.

"They're keeping it very, very low key," a source told the site. "He's not one for the limelight and fame and she likes that about him. They have a real connection."

Scarlett divorced Canadian actor Ryan Reynolds in 2010 after two years of marriage and had a brief affair with Sean Penn.