Dueles is from the verb doler, which means "to hurt" or "to ache". While often used to describe physical pain (e.g., me duele la cabeza - my head hurts), this song uses it in a deeply personal and poetic way to express emotional heartbreak.
By singing ¡cómo dueles!, the artist is saying "how you hurt me!" or "you are a source of so much pain." It's a powerful and direct way to express that the very existence or memory of a person causes a deep, constant ache, making it the central theme of this moving ballad.
Have you ever felt a breakup so intensely it feels like a physical injury? That's exactly what Jesse & Joy are singing about in 'Dueles.' The song starts by remembering a perfect relationship where their light was 'celestial' (heavenly) and they had found true happiness. But then, with no warning, it all ended. It's been exactly one month since the other person just left, deciding to 'renunciar a quererme' (give up on loving me).
The title itself means 'You Hurt,' and the song is a powerful expression of that pain. The singer explains that while physical wounds heal, this breakup 'me rompiste en dos' (broke me in two) and feels impossible to fix. The feeling is so overwhelming that they wish they could go back in time and 'evitar haberme permitido amarte' (avoid having allowed myself to love you), just to escape the current hurt. It’s a sad but beautiful song about the kind of heartbreak that leaves a deep mark.