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.At Jonze's suggestion, she and Joaquin Phoenix avoided seeing each other on set during filming. Jonze explained: "It was only in post production, when we started editing, that we realized that what the character/movie needed was different from what Samantha and I had created together.So we recast and since then Scarlett has taken over that role." Eric Zumbrunnen and Jeff Buchanan served as the film's editors.Theodore asks her if she is simultaneously talking to anyone else during their conversation, and is dismayed when she confirms that she is talking with thousands of people, and that she has fallen in love with hundreds of them.Theodore is very upset at the idea, but Samantha insists it only makes her love for Theodore stronger.The idea of the film initially came to Jonze in the early 2000s when he read an article online that mentioned a website where a user could instant message with an artificial intelligence."For the first, maybe, 20 seconds of it, it had this real buzz," said Jonze.
Steven Soderbergh became involved in the film when Jonze's original cut ran over 150 minutes, and Soderbergh cut it down to 90 minutes.Theodore meets with Catherine at a restaurant to sign the divorce papers and he mentions Samantha.Appalled that he can be romantically attached to what she calls a "computer", Catherine accuses Theodore of being unable to deal with real human emotions. Sensing that something is amiss, Samantha suggests using a sex surrogate, Isabella, who would simulate Samantha so that they can be physically intimate.Zumbrunnen stated that there was "rewriting" in a scene between Theodore and Samantha, after Theodore goes on a blind date.He explained that their goal in the scene was to make it clear that "[Samantha] was connecting with [Theodore] and feeling for him.