Cameron Diaz’s ex-boyfriend and her new man will be sharing the big screen when Alex Rodriguez makes his feature film debut in the upcoming romantic comedy Friends With Benefits — opposite Justin Timberlake! JT and Mila Kunis play friends who have no-strings-attached sex with each other — until complications ensue. No word on whether A-Rod will be one of those complications, but Variety reports that the movie’s producers will work around the New York Yankees slugger’s baseball schedule. Although she’s been dating A-Rod for months, Cameron remains close to her ex Justin, who she’ll co-star with in the comedy Bad Teacher. She recently told Harper’s Bazaar, "Justin and I have laughed together for years. He is the funniest guy," and says she and her ex “have a natural rhythm” on set. Hopefully, A-Rod and Justin will also have that rhythm — the new Bruce, Demi and Ashton, anyone?