Justin Timberlake Gropes Mila Kunis at Movie Awards

Justin's getting grabby!

At Sunday's MTV Movie Awards, Justin Timberlake had a hands-on moment with his Friends With Benefits costar, Mila Kunis, when they presented the night's first award for Best Male Performance.

"Even though we're in the movie Friends With Benefits, we've never dated," Timberlake, 30, told the audience. Added Kunis: "We're like brother and sister."

To demonstrate their platonic bond, Timberlake — who Us Weekly reported was "absolutely obsessed" with Kunis during filming — went right ahead and felt her up.

"[We have a] totally platonic relationship, which is why I can do this," he said as he grabbed her boobs. In return, Kunis, 27, cupped his genitals.

Presenting the award to Twilight's Robert Pattinson, Timberlake couldn't resist making one more joke after Kunis uttered the famous "and the winner is…" phrase. "I think we just found out," Timberlake said with a chuckle. "What a shameless reference to my penis!" See more pics of Justin and Mila fondling each other.

Despite their on-stage antics, Kunis has said she had a bit of trouble disrobing in front of Timberlake for the flick, out July 22.

"It's very awkward. I mean, the truth is, we got to have very uncomfortable scenes for two weeks," she told Ellen DeGeneres in December. "There's like 150 crew men watching and you see each other's bits and pieces. The whole thing is just wrong!"

Tell Us: Were Justin and Mila's MTV antics funny or did they go too far?

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