Dueling Movies: Friends with Benefits was released six months after this film, and (as you might have guessed from the title) features an incredibly similar premise. And for an added bonus, the female lead of that movie is Natalie Portman's Black Swan co-star, Mila Kunis, who also played Ashton Kutcher's girlfriend on That '70s Show (and following Kutcher's divorce, he and Kunis would date in real life, to eventually get married). The male lead, Justin Timberlake used to be in *NSYNC, which once released an album called No Strings Attached. What's more, both films' lengths and box offices are amazingly similar — as much as it's unintended, it adds up to the coincidental-or-not double theory.
