"I've Been in Love" by Gretchen Wilson is a song about realizing that it's time to move on from a relationship that has grown stagnant and unfulfilling. The lyrics narrate the journey of the singer, who acknowledges that they have experienced both right and wrong decisions, strength and weakness in the relationship. However, they come to a realization that they have been in love for too long and it's time to break free. The song expresses the singer's determination to leave the past behind and embrace a new chapter in their life. They declare that by tomorrow, they'll be on a plane, leaving their sorrow behind and exploring the world. The singer recognizes that although their partner might find someone else, they can no longer deceive themselves and continue living a lie. Throughout the song, the singer emphasizes the need to break free and return to their own life. They acknowledge the good moments they shared with their partner, but ultimately, it's overdue to let go. The lyrics suggest a sense of liberation and urge their partner to understand and accept their decision to move on. In the final lines, the singer assures their former lover that their departure is not personal or reflective of another romantic interest. Their heart cannot be smothered, and they must get up and go. Ultimately, the song conveys a message of self-discovery, independence, and the need for personal growth after being in a love that no longer brings fulfillment.