Meaning of "Love In Vain" by Keb' Mo'

The lyrics of "Love In Vain" by Keb' Mo' reflect themes of unreciprocated love, heartbreak, and loneliness. The narrator's actions of following the woman to the station with her suitcase symbolize his willingness to go the distance for someone who does not feel the same way. The train leaving with "two lights on behind" represents a sense of duality and imbalance in their relationship, where the blue light symbolizes his emotions and the red light his thoughts. The repeated refrain of "all my love's in vain" emphasizes the futility of his efforts and the painful realization that his feelings are unreturned. The overall mood of the song conveys a sense of melancholy and resignation in the face of unrequited love.