Mood: The mood of the video appears to be melancholic and introspective, with a sense of longing and nostalgia. The theme seems to revolve around love, loss, and possibly heartbreak, as hinted by the phrase 'Sometimes... true love can be lethal'. The overall emotion conveyed is one of wistfulness and yearning.

Environment: The setting of the video appears to be a serene and peaceful outdoor location, possibly a lake or a river, surrounded by trees and greenery. The warm sunlight and calm water suggest a tranquil atmosphere, which contrasts with the emotional turmoil that may be unfolding in the video.