Mood: The mood of the video appears to be romantic and nostalgic, with a sense of longing. The theme seems to revolve around unrequited love or a complicated relationship, as hinted by the title 'half girlfriend' and the song title 'Phir Bhi Tumko Chaahunga' which translates to 'Even then I will love you'. The overall emotion conveyed is one of yearning and affection.

Environment: The environment or setting of the video seems to be a dark or dimly lit space, possibly indoors or outdoors at night, given the black background and the visible moon. The focus is on the two main characters, suggesting an intimate or isolated setting that highlights their emotions and interaction.