Mood: The mood of this video appears to be romantic and upbeat, with a focus on love and relationships. The use of pastel colors and the word 'romantic' in the title suggests a lighthearted and affectionate tone. The overall theme seems to be a musical mashup of popular romantic songs.

Environment: The setting of the video is likely a studio or indoor location, given the plain white background and the presence of a single main figure. The environment appears to be modern and trendy, with a focus on music production and editing.