According to Us Weekly, Justin Timberlake allegedly cheated on Jessica Biel with Olivia Munn in September 2010 after meeting at a MySpace event while he was promoting his film, "The Social Network," which helped launch the careers of his co-stars Jesse Eisenberg, Andrew Garfield, Armie Hammer, and Rooney Mara, and took home a plethora of awards during the 2011 award show season (via IMDb).

A source told the outlet that after Munn and Timberlake met, he "started chasing her immediately," but Munn resisted his advances and told him she wasn't interested if he was still in a relationship with Biel; however, the insider told the magazine that the former *NSYNC member had "been telling people it's over with Jessica," even though "the reality is he's just doing it behind her back." Munn reportedly took him back to Gansevoort Park Avenue NYC, the hotel she was staying at, where they "were openly affectionate" and "had amazing sex" that night.

Both Munn and Timberlake's reps denied that they were involved with each other.