They were both dressed in puffy, winter coats to brave the cold weather together, reported Us magazine.
The Big Apple lovebirds, who began dating one month ago, also attended Johansson's Hitchcock premiere together in the city on Sunday, November 18.
The actress and her beau were also looking "love-dovey" during a dinner date at the Beatrice Inn the previous week.
Johannson split from her advertising executive boyfriend Nate Naylor in October after about a year of dating. She was previously dating Sean Penn (24 years her senior) for five months in 2011, and was married from 2008 to 2010 to Ryan Reynolds, who recently wed his Green Lantern co-star, Blake Lively.