Me arrepiento means 'I regret it'. It comes from the reflexive verb arrepentirse, a powerful word used to express deep remorse or regret for something you have done.
This phrase is the emotional core of the song. The singer declares that if he once said he loved someone, 'hoy me arrepiento' (today I regret it), marking a dramatic turning point from past love to present-day regret.
“Si Una Vez” is Carin León’s fiery declaration of never again. Picture someone who gave every drop of affection—“todo mi amor y más”—only to receive indifference in return. In this Regional Mexican anthem, the singer looks back at his past devotion with a mix of regret and newfound strength, confessing that he must have been “loco” to ever promise his life for that love. Each catchy verse turns heartbreak into resolve, showing listeners that recognizing a toxic relationship is the first step toward reclaiming their self-worth.
Instead of wallowing, Carin flips the script: he predicts the ex will someday regret their coldness, while he proudly vows he “no lo vuelve a hacer.” The song’s vibrant brass, guitars, and León’s gritty vocals transform pain into empowerment, making it the perfect soundtrack for anyone ready to shout, “That mistake was yesterday—bring on tomorrow!”