Josh Hartnett and Scarlett Johansson back together

Josh Hartnett and longtime girlfriend Scarlett Johansson, were spotted Friday night reigniting their relationship at TriBeCa restaurant Cercle Rouge reports Page Six.

"They had a meal and got progressively cozier as the night went on," said a spy.

"Then they started to make out in full view of the restaurant at their table and didn't really care who saw."

Last month, Page Six reported Hartnett and Johansson's split due to conflicting schedules and film shoots. Rumors of Hartnett dating an actress in New Zealand emerged soon after.

After texting his way through a screening Monday, Hartnett hit the GQ-sponsored after-party at Soho Grand and chatted up some female guests.

Meanwhile, Scarlett Johanssonwas snubbed for a BlackBerry computer reports Sun UK.

Scarlett explains: "Keira and I, and we’re totally naked, and some guy is on his BlackBerry computer.

"Everyone was busy working. But I guess it’s better than if they were all looking at me. It was comfortable."

Scarlett - who was announced Esquire magazine's Sexiest Woman 2006 - is prepared to reveal all in a movie.

She added: "I’m not opposed to doing nudity, it would just have to be the right project, maybe some sensational European art film."