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Ruby Sparks is one of the year's most powerful and inventive love stories -- which is to be expected considering how much passion was put into this passion project by the pair of real-life couples fueling the film.

PHOTO - Ruby Sparks' Poster Contest

Not only is writer and co-star Zoe Kazan dating Paul Dano, her on-screen leading man, but co-directors Jonathan Dayton and Valerie Faris (of Little Miss Sunshine fame) are also together in real life.

The river of love that flows through this entire project is gloriously realized in Ruby Sparks -- a love story about one lonely writer (Dano) whose literary creation (Kazan) comes to life and begins an all-consuming love affair with her creator.

Check out an exclusive ETonline behind the scenes look at Ruby Sparks, which is playing in theaters now!