Eternal Sunshine of the Spotless Mind

Eternal Sunshine of the Spotless Mind is a 2004 American romantic sciencefiction comedydrama film about an estranged couple who have erased each other from their memories, written by Charlie Kaufman and directed by Michel Gondry. The film uses elements of science fiction, psychological thriller, and a nonlinear narrative to explore the nature of memory and romantic love. It opened in North America on March 19, 2004, and grossed over 70million worldwide.

The shy, softspoken Joel Barish and the unrestrained freespirit Clementine Kruczynski begin a relationship on a Long Island Rail Road train from Montauk, New York to Rockville Centre. They are almost immediately drawn to each other despite their different personalities.Although they do not realize it at the time, Joel and Clementine are, in fact, former lovers, now separated after having spent two years together. After a fight, Clementine hires the New York City firm Lacuna, Inc. to erase all of her memories of their relationship. Upon discovering this, Joel is devastated and decides to undergo the procedure himself, a process that takes place while he sleeps. ........

Source: Wikipedia