The song "Rain Keeps Fallin'" by Grand Funk Railroad is about heartbreak and longing for a lost love. The narrator reminisces about a night when it was raining and they couldn't tell if it was their ex-lover calling out to them. The rain serves as a metaphor for their sadness and loneliness. The thunder and rain intensify the narrator's fears and emotions, causing them to wish for the rain to stop and the pain to fade away. However, every night, the rain continues to fall, symbolizing their ongoing suffering. The lyrics express the narrator's yearning to go back home where they feel they belong, but acknowledge that it won't be the same without their lost love. Feeling like a loser, they question why they should even care about their life anymore since everything fell apart when their partner left. Despite their despair, the rain persistently falls on their window pane, representing the enduring pain and sorrow they continue to experience. The repetition of the phrase "The rain keeps fallin' on my window pane" emphasizes the constant reminder of their broken heart. Overall, "Rain Keeps Fallin'" conveys the emotional journey of heartbreak and the struggle to move on after losing love.