Justin Timberlake 'cheating' on Jessica Biel with Olivia Munn

Posted by Zotta Rendevouz

The newest celebrity rumor currently running rampany across the internet has to do with pop star-turned actor Justin Timberlake, who has been dating actress Jessica Biel for quite some time now. However, is their relationship on the rocks thanks to some new allegations?

According to a report from Us Weekly, Timberlake (who is being touted as an Oscar contender for "The Social Network") had a three-day fling with Olivia Munn, a comedic actress best known for her roles on "Attack of the Show" and "The Daily Show with Jon Stewart." Munn originally did not give in to his advances at first, but the report claims she did in the end. Why? The Us source uses this as an explanation:

"[He] has been telling people it’s over with Jessica, even though the reality is he's just doing it behind her back."

Before we consider this is fact, though, we have to remember that Justin's representative flat-out denied the star doing anything of the sort. Munn's rep, meanwhile, would not comment on her personal life.