Her

Her is a 2013 American science-fiction romantic drama film written, directed, and co-produced by Spike Jonze. In a near future Los Angeles, Theodore Twombly is a lonely, introverted, depressed man who works for a business that has professional writers compose letters for people who are unable to write letters of a personal nature themselves. Unhappy because of his impending divorce from his childhood sweetheart Catherine, Theodore purchases an operating system upgrade that includes a virtual assistant with artificial intelligence, designed to adapt and evolve. He decides that he wants the AI to have a feminine voice, and she names herself Samantha. Theodore is fascinated by her ability to learn and grow psychologically. They bond over their discussions about love and life, such as Theodore's avoidance of signing his divorce papers because of his reluctance to let go of Catherine.
Samantha convinces Theodore to go on a blind date with a woman, with whom a friend has been trying to set him up. The date goes well, but Theodore hesitates to promise when he will see her again, so she insults him and leaves. Theodore mentions this to Samantha, and they talk about relationships. Theodore explains that, although he and his neighbor Amy dated briefly in college, they are only good friends, and that Amy is married. Theodore and Samantha's intimacy grows through a verbal sexual encounter. They develop a relationship that reflects positively in Theodore's writing and well-being, and in Samantha's enthusiasm to grow and learn.
Amy reveals that she is divorcing her husband, Charles, after a trivial fight. She admits to Theodore that she has become close friends with a feminine AI that Charles left behind. Theodore confesses to Amy that he is dating his operating system's AI.