Sweet Revenge on Fug Diaz!

It's no ACCIDENT that Justin Timberlake hooked up with juicy Scarlett Johansson now that he's a free man again. Justin had has his eye on Scarlett for awhile and he PERSONALLY pursued her to appear in his video so he could really get to know her. “Scarlett has always liked Justin. They’ve always had a flirtation – that’s why Cameron was threatened by her.” With good reason. The decision to cast the 20-year-old as the video vixen pushed Timberlake's relationship with Diaz to the breaking point, and paved the way for Johansson to move in for the kill.

“She could not believe he went behind her back to put her in the video," says a Timberlake pal. "Cameron was very jealous of Scarlett.” Adds the source, “they definitely got together after she did the video.” Indeed, sources in both stars’ inner circles tell Us the couple are in the beginning stages of a relationship and excited to get to know each other.

He's especially impressed because Scarlett says she doesn't believe in monogamy - she likes an open relationship. That suits Justin just fine - it's the best of both worlds. He can hang with sexy Scarlett and have his freedom while on tour. Scarlett is already very friendly with Justin's mom - a good sign. We predict Justin won't be able to resist giving advice to Scarlett on her upcoming album "Scarlett Sings Tom Waits."

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