The Everly Brothers' song "I Used to Love You" is about a person who was once in love with someone but has now fallen out of love. The lyrics describe how they used to feel deeply for their partner, but over time, they have come to realize that their love has faded away. The lyrics convey feelings of betrayal and mistreatment by the partner. The narrator mentions that whenever they turn their back to leave, their partner is already pursuing someone else, causing emotional pain. The person singing feels tortured by their partner and expresses their decision to no longer love them. The second verse emphasizes the unfair treatment the narrator has endured in the relationship. They reminisce about how they used to care and show affection by kissing their partner. However, they've come to realize that their partner does not treat them fairly and is the meanest person they have ever encountered. The chorus emphasizes the narrator's realization that they cannot stay with their unloving partner and the need to break free. They express their reluctance to continue playing the game of love, as the rules always seem to change, and they are always the one who ends up losing. The repeated phrase "No more" in the outro signifies the narrator's final decision to move on from the unhealthy relationship. They are determined to leave their partner behind and no longer harbor any love or affection for them. Overall, "I Used to Love You" portrays the journey of falling out of love, realizing the mistreatment within the relationship, and ultimately deciding to move on and let go.