Justin Timberlake’s New Love?

Sources say that Timberlake and Diaz’s romance was on the rocks when he made the decision to cast Johansson in his new video "What Goes Around." Some think it odd that Johansson agreed to shoot the video since she is so picky about her film choices. A source close to Johansson said she chose to do the video because she has a major crush on Timberlake. The source said, "Scarlett has always liked Justin. They’ve always had a flirtation – that’s why Cameron was threatened by her."

Reportedly Timberlake went behind Diaz’s back to get Johansson to do the video, pushing his relationship with Diaz to the end. A friend of Timberlake’s said, "She could not believe he went behind her back to put her in the video. Cameron was very jealous of Scarlett." Reportedly, the relationship between Timberlake and Johansson turned romantic after they shot the video.

Thursday it was reported that Timberlake and Diaz had split and hadn’t spent the holidays together. Timberlake reportedly told some fans at a nightclub in Memphis a few days before Christmas that he and Diaz were "done." Diaz was also a no show at the premier of Timberlake’s new movie Alpha Dog, but it was reported that Timberlake was spotted chatting up Johansson one on on for about an hour. Johansson then reportedly spent the rest of the night chatting with Timberlake’s mother, Lynn Harless. Maybe after three-years Timberlake and Diaz really have split. Seems that Timberlake and Johansson are creating some music of their own.