Quebrar means "to break" or "to shatter". It's a more poetic and intense verb than the common Spanish word romper.
In this heartbreaking song, Ivan Cornejo uses it to express deep emotional pain. He sings that it was his lover's plan "de quebrarme el corazón" (to break my heart), making the listener feel the sense of being completely shattered. It's a powerful word that perfectly captures the raw feeling of betrayal.
Ivan Cornejo starts this track with a spoken conversation about colors: one voice picks blue because the other person feels as calm as the sea. But that gentle opening instantly shatters. Cornejo notices an icy shift in his partner's eyes and touch, singing, "Tu piel se hace de hielo cada vez que te toco" ("Your skin turns to ice every time I touch you"). He spots the emotional distance right away and suspects someone else is involved, throwing down the blunt boundary: "Tú eres mi otra mitad, para tres no hay espacio" ("You are my other half, there is no room for three").
From there, the track faces the mess of betrayal head-on. He calls out a fake embrace ("Abrazo tan falso") and admits he ignored all the warnings from his friends just to stay close to someone who enjoyed breaking his heart ("Te encanta verme sufrir" / "You love watching me suffer"). The Spanish here is direct and everyday; when he sings "eso es normal pa' ti", pa' is a spoken contraction for para, meaning "normal for you." If the relationship is doomed, Cornejo just wants it over quickly: "Si me vas a matar no lo hagas tan despacio" ("If you're going to kill me, don't do it so slowly").