Desarmarme literally means “to disarm myself,” but here it is used emotionally: “Déjame desarmarme” means “Let me come undone” or “Let me lower my defenses.” It is a vivid, memorable way to describe becoming vulnerable with someone, making it an especially poetic word to learn from the song.
The singer asks someone to stay near enough to absorb him: "Escucha mi voz / Y quédate cerca" (Listen to my voice / And stay close), close enough "Pa' que huelas a mí" (so you smell like me). What he offers is physical and a little desperate, "Te doy mi sudor" (I give you my sweat), "Te dedico mis fechas" (I dedicate my dates to you): his body and his calendar, handed over whole.
The middle verse turns on himself. He calls his own late-night thoughts "preguntas tan pendejas" (such stupid questions) and admits "Siento que escribí tantas cosas que no sentí nada más" (I feel like I wrote so many things that I felt nothing else). The hook keeps swinging between two claims, "Siento que no beso mal" (I feel like I am not a bad kisser) and "Siento que merezco más" (I feel like I deserve more), and he confesses he "practicado muchas horas" (practiced for many hours) after feeling bad one day. The closing lines drop the bravado and ask plainly: "Quiéreme con mi mal temperamento" (Love me with my bad temper), "No dejes de mirarme / Con ojos de curarme" (Do not stop looking at me / With eyes that heal me).