Rob & Kristen's Big Apple Dinner Date

The end of the New Moon promotional juggernaut was clearly not the end of the road for the romance between co-stars Kristen Stewart and Robert Pattinson. The pair may have finished with their media obligations, but they certainly haven't gone their separate ways and are still together as the holidays draw near.

On Sunday night, R-Pattz and K.Stew enjoyed a dinner with friends at hotspot Megu in Manhattan's chic TriBeCa neighborhood. This is the first time the two had been spotted together in public since New Moon's New York screenings late last week.

The Japanese restaurant — a favorite for Big Apple celebs — stayed open late for the crowd of about eight to enjoy themselves.

"You could tell they were having a little party," one onlooker tells OK! about the dinner. "Probably to celebrate the end of the grueling promotion tour."

According to those inside the restaurant, Rob — sporting a wool hat — and Kristen — wearing a yellow dress — sat across from each other at the table, where restaurant sources confirm that R-Pattz was enjoying Fritz Briem 1809 Berliner-Weisse artisanal beers while Kristen sipped on her Coca-Cola.

"They'd obviously been there quite some time," says a witness. "The waiters were still delivering things to the table an hour after the kitchen was supposed to have closed."

The late night seemed to be a drain on the teenage actress. "Kristen looked exhausted and was resting her head on her hand with her elbow on the table," the onlooker tells OK!, adding that Rob popped outside midway through the meal for a cigarette with a male friend.

The dinner party finally split up around 12:30 a.m., with Rob and Kristen being picked up by their drivers and the rest of the group pounding the NYC pavement.