The 27-year-old, who was earlier married to actor Ryan Reynolds, has reportedly dumped the advertising executive just days after she was spotted flirting with one of Lindsay Lohan's close friends, reported Daily Mail.
"They never officially lived together, but Nate has moved all of his stuff out and back into his apartment. The relationship is over. It has not been amicable," a source said.
Johansson began dating 38-year-old Naylor last January after meeting him in New York, shortly after her split from 52-year-old actor Sean Penn.