Just watched 500 Days of Summer again the other day and so I thought I'd show y'all this:
"In this particular segment, Joseph Gordon-Levitt's character, Tom, goes to a party hosted by Summer (Deschanel). This is a while after they had broken up, and she invites him when they run into each other at a co-worker's wedding. In the scene, we see Tom heading out to Summer's party, but the screen is divided in half. The left side has a heading on the bottom that says, "Expectations." On the right says, "Reality." After getting along very well with Summer at the wedding, Tom thinks that maybe he'll get back together with her after that night. This is indicated by the narration at the beginning of the scene: "Tom walked to her apartment, intoxicated by the promise of the evening. He believed that this time, his expectations would align with reality.""