Theodore is a introverted and lonely writer. He writes loved mails to people who had difficulty in expressing emotion. Depressed after his divorce - the love from his childhood, Theodore fell in love with Samantha, a computer operating system with artificial intelligence and ability to learn, communicate, such as the ordinary people.
It's an odd, sad love story, combined with a meditation on technology as an accelerator of social loneliness. Not a small part of it seems to be an allegory of lonely guys and their fear of women.
One half of the relationship at the center of 'Her' may lack a physical form, but it is nonetheless a film about the universality of romance: its longing, its intensity, and its transformative power - for the best, and the worst.
The greatness of Her is not that it's a story about relationships that explains technology; it's that it's a story about technology that explains relationships.
Her shares a lot of themes with Eternal Sunshine of the Spotless Mind, another story about the difficulty of moving on from relationships that once seemed destined to last forever.
Jonze's film is a quietly unsettling and impressive accomplishment, one that makes us believe its protagonists are in love despite the fact they can never be together.