Some insiders have been suggesting Mila Kunis played a major role in the recent split of Justin Timberlake and Jessica Biel. But the Black Swan actress is blameless in this one, according to People magazine. "Mila had nothing to do with their breakup. In fact, no one came between them. They decided their relationship ran its course, and it was time to move on," a source says, adding that Timberlake and Kunis are "not in a relationship. They star in a movie called Friends with Benefits, but they're just friends. That's it. They are not together."