Mood: The mood of the video appears to be romantic and celebratory, focusing on love and relationships. The theme is centered around Valentine's Day, indicated by the title 'VALENTINE'S MASHUP'. The emotions conveyed are affection, intimacy, and joy, highlighting the chemistry between couples.

Environment: The settings of the video seem to vary, showcasing different environments that complement the romantic theme. There are indoor settings with warm lighting, suggesting cozy and private spaces. Outdoor scenes with natural light and bokeh effects add a sense of serenity and beauty. The variety in settings, from close-up intimate moments to slightly more public or social scenarios, suggests a diverse and vibrant celebration of love.