Mood: The mood of the video appears to be romantic and intimate, with a sense of longing. The theme seems to revolve around love, relationships, and possibly heartbreak or regret, given the title 'Hangover'. The overall emotion conveyed is one of tender affection and closeness between the two individuals.

Environment: The setting seems to be outdoors, possibly in a garden or a floral environment, given the presence of flowers in the background. The atmosphere is serene and dreamy, with a hint of melancholy. The presence of confetti or small particles in the air adds a celebratory yet ephemeral feel to the scene.