Mood: The mood of the video appears to be romantic and intimate, with a sense of longing. The theme seems to revolve around love and relationships, with the title 'Tu Hai Ki Nahi' suggesting a question of existence or presence in someone's life. The overall emotion conveyed is one of yearning and closeness.

Environment: The setting appears to be a dimly lit, upscale indoor location, possibly a restaurant or a bar, given the background lights and the attire of the individuals. The atmosphere is cozy and private, emphasizing the closeness of the couple.