Desencantes comes from the verb desencantar, meaning to become disenchanted or disillusioned. It's a less common word in everyday conversation, making it stand out.
In the song, the singer pleads, "Por lo que nos paso no dejare que te desencantes" (Because of what happened to us, I won't let you become disenchanted). He's expressing a strong desire to prevent his lover from losing faith or interest in their relationship, despite past difficulties. This word beautifully captures the emotional stakes of the song.
"Nada Se Pierde" ("Nothing Is Lost") is Willie Gonzalez's plea to win back a partner after a painful breakup. He admits he is heartbroken and confused, and asks her to sit down, talk honestly, and start over instead of walking away for good.
The chorus repeats the song's core idea: nothing between them has to be lost if they are willing to talk it through and rebuild what they had. A short spoken bridge even has him "calling" her on the phone, underlining how much he wants one more conversation before giving up.
It is a hopeful, bachata-style reconciliation song rather than a bitter breakup anthem -- the focus stays on reopening the conversation, not on blame.