Cam Diaz & Ex JT Gear Up for New Acting Gig... Together

Watch out Jessica Biel! Boyfriend Justin Timberlake has been cast in a new acting gig, opposite one hot co-star — former girlfriend Cameron Diaz!

Justin will play the lead in Bad Teacher opposite blond bombshell Cameron, according to the The Hollywood Reporter.

The flick is about a "foul-mouthed, gold-digging seventh-grade teacher who, after being dumped by her boyfriend, sets her sights on a colleague who is dating a substitute teacher, who also is the scion of a watch fortune."

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Molly Shannon, Jason Segal, and Modern Family's Eric Stonestreet, have also joined the cast, THR reports.

JT reportedly beat out John Krasinski, Joel McHale, Timothy Olyphant, Guy Pearce, Adam Scott and relative newcomer Cheyenne Jackson for his upcoming role.

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Justin has been on an acting kick for a while. Wonder when he will return to the music scene?

As far as Justin and Cameron together again, they each seem happy in their current relationships with Jess and Alex Rodriguez.

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Hope the co-stars can maintain their friendship after their tough split.