Lastimaste comes from the verb lastimar, meaning 'to hurt' or 'to wound'. It's a strong verb that conveys emotional or physical pain.
In "Me Canse De Amarte," the singer uses lastimaste to directly address a former lover, expressing the deep pain caused by their actions: "Qué poco te importó lo nuestro que me lastimaste" (How little you cared about us that you hurt me). This word captures the raw emotion of betrayal and heartbreak central to the song's theme.
Grupo Firme and La Corporación build this one around a slow-burn realization rather than a blowup. The hook lays it out directly: "Me cansé de amarte cuando al fin me di cuenta" [I got tired of loving you when I finally realized] "Que nunca cambiaste" [that you never changed]. It reads less like an accusation than an exhausted conclusion, the kind you reach after giving someone "el lugar que no mereces" [the place you don't deserve] for far too long.
The verses spell out how it got there. The narrator admits to making excuses, "Trataba de justificarte con tus mentiras" [I tried to justify you with your lies], because "Tan ciego estaba el corazón" [my heart was so blind]. What actually wore him down wasn't one big betrayal but a string of small absences: "Dolía que pasaba el tiempo sin una caricia" [it hurt that time passed without a caress], and worse, catching a partner hiding on purpose, "Dolía que al buscar tus labios los escondías" [it hurt that when I sought your lips, you hid them]. The chorus repeats near the end almost like a door closing, not a cry.