Padezco is a dramatic verb meaning "to suffer from," typically used when talking about a chronic illness. It's a more poetic and intense word than the more common verb sufrir (to suffer).
In this bachata classic, Romeo Santos sings "Yo tan joven padezco del corazón" (Being so young, I suffer from a heart condition). He uses this powerful word to treat his overwhelming love like a disease he's happily afflicted with, perfectly capturing the song's passionate drama.
Romeo Santos and Usher join forces in this Bachata track to sing about a feeling so heavy it knocks them completely off their feet. Both singers describe love as a kind of physical trap. Romeo admits, "Tu cuerpo es la cárcel y yo un prisionero / Y jamás quiero salir" ("Your body is the prison and I'm a prisoner / And I never want to leave"), while Usher matches him in English, claiming love leaves him "trapped inside my own bars." They are not looking to escape, though. They are happy to be locked in, even when Usher describes feeling like his chest is pounding and he is drowning.
The real tension comes down to a single deal they want to make. Romeo confesses, "Quiero ser tuyo enterito pero tengo miedo" ("I want to be yours completely, but I am afraid"). The word enterito is a playful, affectionate diminutive of entero (whole or entire)—he wants to give himself over 100%, without holding a single piece back. Because they are putting everything on the line, both men demand one guarantee in return: "Prométeme que no me vas a dejar sin tu amor" ("Promise me that you won't leave me without your love"). Usher takes that plea a step further, asking for commitment that lasts "way past forever." It is overdramatic and desperate, but that all-or-nothing vulnerability is exactly what makes the song hit so hard.