|Scarlett Johansson |
'The Avengers' star is said to have been secretly romancing the freelance creative director for the last six months, and they were spotted canoodling together in Manhattan, New York, at the weekend.
A source told RadarOnline.com: "They're keeping it very, very low key. He's not one for the limelight and fame and she likes that about him."
Scarlett, 27, and Nate were also spotted having a cozy dinner with three friends together at a restaurant in the city's Bowery Hotel.
Another source told the New York Post newspaper: "Scarlett was rubbing his back and kissing his neck.
"He was wearing a short- sleeve, V-neck T-shirt and had tattoos up his arm."
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Meanwhile, Scarlett and her ex-husband, Ryan Reynolds - who she split from in 2010 after two years of marriage - have put the home they used to share together in Los Angeles up for sale.
The $3.6 million, four-bedroomed house in the Los Feliz Hills area of the city is eco-friendly with solar panels, floor-to-ceiling windows in the kitchen, living room and den and a private garden and outdoor bath connected to the master suite.
The couple - who finalized their divorce in July 2010 - bought the property in 2008 for $2.9 million.