Bradley Cooper has silenced reports he's dating Jennifer Aniston after stepping out with Renee Zellweger for a romantic dinner date in New York.

The Hangover actor has repeatedly denied rumors his relationship with his He's Just Not That Into You co-star Aniston is anything more than platonic, insisting they are really "just friends," despite being photographed dining out together in June.

Now reports suggest Cooper is dating Zellweger - he took the Bridget Jones Diary actress out to a posh Italian restaurant on Tuesday, where fellow diners claim they acted like the perfect couple.

An eyewitness tells OKmagazine.com, "He pulled her chair out for her when she sat down and he kissed her on the hand. If they're just friends, they were being awfully affectionate! Throughout the dinner they were playful and flirty. She played with her hair a lot, and she would often touch his arm when she was making a point about something. At one point, he seemed to want to whisper something to her as if it were a secret. He spoke into her ear and then they both started giggling."

Zellweger, who appears alongside Cooper in upcoming movie Case 39, has previously been romanced by Jim Carrey and rocker Jack White, and was married briefly to country singer Kenny Chesney.

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(This news article provided by World Entertainment News Network)