Mila Kunis stopped by 'The Ellen DeGeneres Show' on Friday to promote her film 'Black Swan,' but it didn't take long for the conversation to turn to her co-star from another film she's shooting, Justin Timberlake, according to

"I adore him. He's great," Kunis, 27, said of Timberlake, 29, during her visit. The pair star in the comedy 'Friends With Benefits' which hits theaters next July.

But when the talk show asked about filming the sex scenes, the actress admitted it was a little uncomfortable. "It's very awkward. I mean, the truth is, we got to have very uncomfortable scenes for two weeks," she said.

"There's like 150 crew men watching and you see each other's bits and pieces. The whole thing is just wrong!" she continued. DeGeneres followed up, asking Kunis which 'bits and pieces' are in the film. Kunis giggled and said, "well, you'll see the movie!"