Confieso is the first-person present tense of the verb confesar, meaning "to confess." It's a dramatic word that implies revealing a deep truth or a hidden feeling.
In this song, the singer admits her vulnerability with the line "No será fácil olvidarte, lo confieso" (It won't be easy to forget you, I confess). This isn't just saying something; it's a solemn admission of her lingering attachment, making it a powerful and emotionally charged moment.
This song is a conversation between two ex-lovers who can't quite let each other go. Aitana kicks things off by asking a pretty brutal question: "¿Para qué me curaste cuando estaba herida? / Si hoy me dejas de nuevo un corazón sin vida" (Why did you heal me when I was hurt? / If today you leave me again with a heart without life). She feels like he came back into her life, helped her get over a previous heartbreak, and then broke her heart all over again, which is somehow even worse.
Sebastian Yatra's part gives his side of the story. He admits his fault, singing "fui yo el que me alejé y me llevó el viento" (it was me who walked away and the wind took me). But he also reveals he isn't over her, even though he knows she's with someone else. They get caught in a cycle of talking again "como si nada" (as if nothing happened), knowing it's a bad idea. The whole song feels like that painful moment when you know a relationship is over, but you keep reopening the wound.