Remordimiento means "remorse" or "regret". It describes a deep, painful feeling of guilt over something you've done wrong.
In the song, Natti Natasha sings the powerful line, "Y hoy me come el remordimiento" (And today, remorse is eating me up). This dramatic expression paints a vivid picture of being consumed by guilt, making it a memorable and advanced way to express this intense emotion.
This song is one of the most intense confessions you'll ever hear. Natti Natasha isn't just breaking up with someone; she's telling them she's been cheating the whole time. She lays it all out, saying, "Para mí no es fácil confesarte que ya no hay más amor" (It's not easy for me to confess that there's no more love) and that she belongs to another man. She takes full responsibility for the pain she's caused, admitting, "Que yo fui quien fallé / Y hoy me come el remordimiento" (I was the one who failed / And today remorse is eating me up).
But the real twist comes with the chorus. The title, "Quién Sabe" (Who Knows), is about the paranoia that comes with her own lies. While she's with her current partner, she wonders if her other lover is finding comfort in someone else's arms. Then she flips it, worrying that even when she's with her secret love, he might be cheating on her: "Si mientras yo lo veo durmiendo él ya tiene a otra / Besándolo suave" (If while I see him sleeping, he already has another / Kissing him softly). It's a cycle of doubt and guilt where no one can be trusted.