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Justin Timberlake, Oliva Wilde

Theo Wargo/WireImage; Jason Merritt/Getty Images

Are Justin Timberlakeand Olivia Wilde kissing costars?

The two freshly single stars, who are shooting Now together, were spotted snuggling at the Roxbury in L.A. on Saturday night.

"They definitely looked like they were on a date," sources tell me, adding that although they were joined by a group, they came and left together.

But today, Olivia seems to be trying to dispel any romance rumors...       

"Cool it, honeybadgers. We are just friends and have been for years," she tweeted today after stories of their friendly outing hit the internet.

The two do have some history, since they worked together on Alpha Dog years ago.

After eight years of marriage, Olivia filed for divorce from her Italian prince husband on March 11, while J.T. called it quits with Jessica Biel earlier this month.

Whether these two are an item or just pals, one thing is for certain: They share similar taste in clothes and cocktails.

Both were wearing white tee shirts and jeans on Saturday night and sipped vodka.