La regastes is a colloquial Spanish phrase that literally translates to "you watered it" (from regar, to water), but it's commonly used to mean "you messed up" or "you screwed up."
In the context of the song, the singer is telling his ex-partner, "Hice todo posible pero tú la regastes" (I did everything possible but you messed up). This phrase is interesting because it's an idiomatic expression that might not be immediately obvious to a learner, and it carries a strong emotional weight, highlighting the ex-partner's fault in the relationship's demise.
In “Mírate en el Espejo,” Eslabón Armado fuses his Mexican-American sierreño sound with a sharp dose of honesty. The narrator speaks directly to an ex, urging her to look in the mirror and face the consequences of her own betrayal. Their relationship is officially over, leaving only “fotos y videos,” and he makes it clear that her tears are no longer his problem. Vivid lines recall late-night rendezvous with someone else and the sting that will resurface each time she drinks, forecasting weeks of crying and a hollow ache she cannot escape.
At its core, the song is a breakup anthem that flips heartbreak into empowerment. He reminds her—and himself—that he gave his best, and no one will treat or kiss her the way he did. The message is simple yet powerful: self-worth thrives when you refuse to carry the guilt that isn’t yours. By the final chord, “Mírate en el Espejo” becomes a mirror not only for the ex but for anyone who needs to walk away from a one-sided love and reclaim their pride.