Justin Timberlake and Jessica Biel have been dogged with breakup rumors for awhile now… Is it True or False that his ex Cameron Diaz has finally come between them? Pop the hood to find out.    In the comedy, which began filming this month, Diaz, 37, plays a middle school teacher who gets dumped by her boyfriend and begins hooking up with another teacher, played by Timberlake, 29.

(There’s even a hotel room sex scene!) This isn’t the first time the two — who split in 2007 after nearly four years of dating — have been spotted together this year. They were seen mingling and laughing at the Hope for Haiti Now telethon in L.A.

And while it’d be normal for any girlfriend to be concerned about their partner doing a sex scene with an ex, Timberlake’s other half — Jessica Biel has said she is “super-excited” to see the film and that “it sounds fantastic.”Yeah right! Girl you better step up the “Becky” before Justin starts calling talking about “working late”