A capricho is a sudden, impulsive desire or decision, often one that is hard to explain. It's a fantastic word to express the idea of a 'whim' or 'fancy'.
In the song, the singer wonders if the reason her relationship failed was simply a "capricho de Dios" (a whim of God). This poetic phrase captures the feeling of a love that seemed destined but was undone by a random twist of fate, making it both heartbreaking and beautiful.
This song is a beautiful and heartbreaking daydream about a love that didn't work out. The singers, Argentinian artist Yami Safdie and Lasso, imagine a perfect alternate reality where everything went right. In this other life, they say, "Nos casamos y viajamos por el mundo" (We got married and traveled the world) and even had kids who "Heredaron mi paciencia y tu sonrisa" (Inherited my patience and your smile). The dream is so detailed and feels so real that the singer starts to wonder if this current, lonely life is the actual nightmare.
Back in reality, they admit they don't know why it failed, suggesting it was maybe "un capricho de Dios / O el coraje que siempre faltó a los dos" (a whim of God / Or the courage we both always lacked). Despite the fantasy of another life, there's still a glimmer of hope for this one. The song ends with a simple, direct plea: "Pero yo aquí te esperaré / Si cambias de opinión" (But I'll wait for you here / If you change your mind), leaving the story on a bittersweet note.