Mood: The mood of the video seems to be romantic and upbeat, with a hint of mystery. The title 'She Don't Know' suggests that there might be a theme of unrequited love or a secret admiration. The overall emotion conveyed is light-hearted and playful, with a touch of intrigue.

Environment: The setting appears to be a dimly lit, possibly indoor location with a blue and orange glow, suggesting a nighttime or low-light environment. The presence of a microphone in front of the man implies that the video might be a music performance or a music video.