Jen Aniston and John Mayer helped Courteney Cox and David Arquette celebrate their nine year anniversary last night.

The two couples attended a humanitarian event in honor of Jeffrey Sachs (who is known for his charity work with Ms. Jolie) at a steakhouse in Los Angeles.

A witness says that Jen and John, “had their arms around each other. She was rubbing his back and whispering into his ear. They were touching each other non-stop all night.”

The couple have been spotted together numerous times over the past couple of months. John attended the cast party of Aniston’s new film, Marley & Me, in Miami and more recently they enjoyed time together at the home of Cox and Arquette.

Of the relationship with Aniston, Mayer has said, “This is not a scandal, this is not an issue, this is not a problem, this needs no spin control. This is me living my life.”

I love, love, love this couple.

And they look terrific!

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Nicolette Sheridan & Michael Bolton, as well as Jennifer Aniston, Courtney Cox and David Arquette all celebrated the new year at Cabo hot spot, ‘Mi Casa’ for their New Years celebration.

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I love pretty much all of the Arquette’s.

The are orginal, grounded and talented. If I were to have to pick one, it would have to be Alexis. I love her craziness, courage and humor. (Yes, I watch the Surreal Life.) I would love to hang out with her just once and paint the town red. What a freaking kick in the pants that would be. I also just love David. He is a bit quirky, cute and I love his unique sense of style. He and Courtney make an absolutely darling couple. The Arquette girls are amazing as well. So who is your favorite Arquette? That is if you can pick just one..