Writers of Justin Timberlake and Mila Kunis‘ new movie, “Friends With Benefits,” last night revealed that his ex, Jessica Biel, once tested for the role. David Newman told us at last night’s screening, “She was actually a huge fan of the project and screen-tested for it years ago.” Asked why Jessica, who split with Justin in March, didn’t get it, Newman said, “We’re not the director,” adding, “She’s great and adorable — smoking hot.” But he said, “Mila was fated for the role.” On rumors of an on-set hookup between Justin and Mila, co-writer Keith Merryman said, “They have such amazing chemistry, everyone is questioning what is going on. Is it art? Is it life?”