Destrozaste comes from the verb destrozar, which means 'to destroy' or 'to shatter'. It's an incredibly powerful and dramatic word to use in a song about heartbreak.
In 'SI SUPIERAS', the singer uses it to express the immense emotional pain he feels, singing "Me destrozaste" (You destroyed me). This isn't just about sadness; it's about being completely broken by someone's actions, making it a very memorable and intense piece of vocabulary.
This song is a straight-up heartbreak anthem. The singer is dealing with seeing his ex with someone new, and it's hitting him hard. He describes going to a party and seeing her there, “Agarrada de la mano / Te miré con él” (Holding hands / I saw you with him). What really gets him is her smile; he says it looked like she truly loved the new guy, and that just “Me destrozaste” (destroyed me). The pain is so intense that he feels completely broken by her actions.
Now, he's just trying to cope. He's listening to sad songs, the kind “De esas que duelen” (that hurt), and feeling like she played him for a fool. He insists he was a good partner, telling her, “No vas a encontrar / Otro igual a mí” (You're not going to find / another one like me). But even after all the pain and the feeling of betrayal, the song ends with a desperate plea. Despite everything, he admits, “Llorar no me ayuda / Ya regresa a mí” (Crying doesn't help me / Come back to me now).