Desengaño translates to "disillusionment" or "disappointment". It's a strong and evocative word that captures a deep sense of lost hope or shattered illusions.
In "Volver A Amar," Cristian Castro uses desengaño to describe the bitter sting left by past heartbreaks and failures. He sings about "la espina cruel del desengaño" (the cruel thorn of disillusionment), painting a vivid picture of the emotional pain that lingers from past experiences before a new love arrives to heal him.
Cristian Castro opens this one already worn down. "Tras el umbral de mis temores" (Beyond the threshold of my fears), he sings, listing his own mistakes and old wounds before he'll even say what the song is about. That's the setup: a guy who's been burned enough times that he's stopped expecting anything good, until someone shows up anyway.
The title line does the real work. "Volver a amar una vez más" (To love again, once more) isn't a grand declaration, it's almost a question he's asking himself. He follows it with "Nacer de nuevo en ti, en tu mirar" (To be born again in you, in your gaze) and "Llenando con tu luz" (Filling with your light) paired against "Las sombras de mi soledad" (The shadows of my loneliness), which is the clearest picture in the whole song: loneliness as a dark room, and this person as the light switch. Simple idea, and Castro sells it by keeping the melody just as unguarded as the words.