Justin Timberlake and Mila KunisJust days after Justin Timberlake and Jessica Biel announced the end of their four-year relationship, rumors began circulating that Mila Kunis may have been the cause of the breakup.

E! Online reported that Timberlake, 30, was very interested in Kunis, 27, and the rumored pair were seen flirting with each other.

A source told PEOPLE, however, that the story was untrue.

The source is quoted saying, "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."