Rompimos comes from the verb romper (to break). In Spanish, it's commonly used to say "we broke up," but Sebastián Yatra plays with the word's literal meaning in the line, "cuando rompimos, nos rompimos en partes" (when we broke up, we broke ourselves in pieces).
This powerful lyric creates a vivid image of the mutual pain of a relationship ending, suggesting that both people were shattered by the experience. It's a poetic and memorable use of a common verb that perfectly captures the song's heartbreak.
This song is all about that one ex you just can't completely let go of. Sebastián Yatra sings about a breakup that was so intense it left both people in pieces: "cuando rompimos nos rompimos en partes" (when we broke up, we broke into pieces). He's convinced they both still have feelings for each other, even if they're trying to move on.
His big idea? A wild, impulsive reunion. He suggests they spend "Una noche sin pensar" (a night without thinking) to drink and "perdonarnos desnudos en el mar" (forgive each other naked in the sea). It's a dramatic, over-the-top plan to put the pieces of their hearts back together. He knows it might just be a fantasy, admitting that "en la vida real te tenga que olvidar" (in real life I have to forget you), but he still believes what they had was special and can't be replaced.