At a March 25 charity event at hot new L.A. eatery Beso (owned by Eva Longoria Parker), Jennifer Aniston and Orlando Bloom were two of several A-list stars who came out to support a good cause. But witnesses at the restaurant tell OK! the pair was adding more than their fair share of spice to the party!

“They were like heat-seeking missiles,” one eyewitness reveals to OK!. “They came together, threw their arms around each other and shared a big hug.” Adds another attendee at the event, “I saw them in a booth next to each other and Jen was looking at Orlando like he was her favorite person in the world. She looked like she wanted to grab him and make out with him!”

Also in attendance: Jen’s BFF Courteney Cox and her hubby, David Arquette, Jessica Simpson, Kate Beckinsale and Eva Longoria Parker. The gathering was all to help raise funds for the Epidermolysis Bullosa Medical Research Foundation.

But this event isn’t the first time Jen, 39, has displayed what sources call a “serious crush” on the adorable Orlando. The pair have known each other since 2003, when the British hunk signed on to play Prince Paris opposite Brad Pitt’s Achilles in the epic big-screen dud Troy.

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