She and Bradley Cooper had dinner Thursday night at Ristorante Il Cantinori near Washington Square Park before leaving together in the same car.
Although there have been rumors that the He's Just Not That Into You costars are dating -- ever since he was reportedly flirting with the actress at the NYC premiere of her new flick Management -- The Hangover star found the reports "hilarious" back in May.
"Unfortunately, it's not true," Cooper, 34, told Us at the time, adding that he was flattered. "I met her three times in my life."
Aniston, 40, is in town filming the comedy Bounty Hunter in Brooklyn.