Last updated at 8:45 AM on 21st October 2010
Has Adrian Grenier gotten himself involved in a love triangle?
The Entourage star has been quietly dating 24-year-old model / photographer Emily Caldwell for the past year and a half.
But a well-placed source exclusively tells MailOnline that Grenier has also been spending time with up and coming Hollywood producer, Courtney Bingham over the past few weeks.
The couple were photographed leaving the swanky Sant Ambroeus restaurant in New York's west village yesterday after a leisurely lunch.
Bingham exited the restaurant after Grenier and stayed back to avoid being photographed next to the 34-year-old actor.
Grenier pulled a wide-eyed face after spotting the photographer.
He waited for her in his car before driving the pair of them off into the afternoon.
And the source says that this is not the first time the two have been out together, although they've been luckier the past few times and managed to escape the paparazzi.
The pair obviously enjoyed their time at Sant Ambroeus as the source says they returned there, for the second day running, earlier this afternoon for another meal.
Earlier in the day they were spotted leaving the Standard Hotel together in the nearby Meatpacking district.
If Grenier has ended things with his girlfriend of the past year and half, it's certainly news to her.
A close friend of Caldwell's tells MailOnline that as far as the model is concerned she is still Grenier's steady girlfriend.
And although Grenier has tried his hardest to keep their relationship out of the spotlight, choosing to walk the red carpet solo and never talking about Caldwell to the media, he was very public with his affection for her at his September 21 Los Angeles premiere party for his new HBO documentary, Teenage Paparazzo.
'Adrian was holding Emily's hand and openly making out with her throughout the night,' an eyewitness tells MailOnline.
However, in maybe a foreshadowing of what was to come, he was also spotted getting close to Bingham during the same party.
'It was kind of weird, at one point Adrian was dancing with Courtney, and they looked kind of intimate,' the eyewitness says. 'It was right in front of Emily, I remember thinking "wow, she must really not be the jealous type!"'
Meantime, whilst the source says Emily is totally in the dark about Grenier's several rendezvous with Bingham, it seems Bingham is also totally in the dark, about Grenier still dating Emily.
'She had no idea he was still seeing her until someone told her the other day, she thought they had broken-up a few weeks ago.'
In the words of Ari Gold: 'Let's hug it out b***hes!'
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