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Jennifer Aniston, John Mayer

Kevin Mazur/VF/Getty Images

Jennifer Aniston and John Mayer may not have been attached at the hip all night Sunday. But the two darling lovebirds def looked like a real couple, complete with Revolutionary Road-style feisty jealousy, at the Vanity Fair party.

Mayer was taking a pic with some attractive babes, and Aniston was all but pleased about sharing her main man. After the gushy photo-sesh, J.A. was overheard at the bar telling John, "What are you doing? Do you know them?"

Meow, way to crack that whip, girl! You really don't want to be lassoed down with any dude, admit it. Another cougar at VF looking quite smashing was…

Madonna before she hit her own shindig. Sleeping with a twentysomething boy truly does wonders for one's skin tone, 'cause Madge really did look glowing. The Queen of Decade Six gushed to a friend nonstop about Jesus, who accompanied La Madge to L.A. Yeah, it'll be a Jonas bro next, we're certain. So sorry M, but our vote for the hottest couple award still goes to…

Gwen Stefani and Gavin Rossdale. You all ask us for real Hollywood couples, and this is one, folks. The insanely gorgeous duo actually hung with Aniston for most of the night as G&G rocked back and forth to the tunes. BFF alert, but where was Courteney Cox? Not liking this fakey scene with Mayer all over again? Another pert pair in date mode was…

Ryan Phillippe and Abbie Cornish. Ry stroked his gal's back, and the two were practically inseparable the whole night despite the fact that Jake Gyllenhaal and Reese Witherspoon were mere feet away. As far as we've heard, there wasn't really any awkwardness with the foursome, but then Reese wasn't rushing up to give greeting hugs to her ex-hubby, either. And Jake just stood there like a frog on a George Clooney's hog. Just do not get this one. A double date more likely to happen (and sizzle) is…

Leonardo DiCaprio and Bar Rafaeli with Djimon Hounsou and fiancée Kimora Lee. The two couples hung tight Saturday at the Night Before party at the Beverly Hills Hotel. While former costars Leo and D caught up, Bar and Kimora hung by their handsome men giggling and chatting. Lots of booze, too. So sorry hon-pies, looks like L and his lady are back on (who can keep up anymore?) even though his model gal seemed to be the silent type when she wasn't having girl talk. Another loaner dude at the same bash was…

Chace Crawford who seemed to be enjoying his guy's night out. C.C. hung with a couple boys most of the night, despite some drunken girls trying to come up and vie for his attention. What's the deal there, Crawford? Don't like the booze or the dames? Or both?

Additional Reporting by Taryn Ryder