WATCH: Mila Kunis and Justin Timberlake Get Naked!

The two still claim they're just friends -- but there's no denying their onscreen chemistry in Friends with Benefits

Justin Timberlake and Mila Kunis continue to insist that their friendship had nothing to do with his recent split from Jessica Biel. But this new trailer for their upcoming flick, Friends with Benefits, is certainly not helping!

Kunis and Timberlake play two pals, both frustrated by past relationships, who decide they'll just have a no-strings-attached sexual fling. In one scene, Kunis and Timberlake even strip down naked in order to assess each other's goods.

The onscreen chemistry between these two is undeniable. And if their off-screen relationship was half as fun as what they portray in the new flick, we're not surprised by the rumors that a little something-something was going on behind the scenes.

Check out the trailer for Friends with Benefits below:

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