The publication recently revealed that the blonde beauty was looking cozy with a dark-haired man who she had dinner with, at the Beatrice Inn, New York on Thursday night.
"They were very lovey-dovey and holding hands under the table all night," a witness told the New York Post.
"They were holding each other while outside smoking in the cold."
The source added that Johansson''s new guy was "dark-haired and slightly taller than her but skinny" and that "he may have been speaking French at one point."
The blonde bombshell has been single since splitting from advertising executive Nate Naylor last month.