Desvelos is a fascinating word that literally refers to 'sleepless nights' but carries a deeper connotation of 'worries' or 'anxieties' that keep someone awake.
In this song, Vicente Fernández uses it to express the profound emotional impact of a love that is fading. He sings, "Cuando me digas que tus desvelos no son por mí" (When you tell me that your sleepless nights/worries are not for me), highlighting the pain of realizing he is no longer the cause of her deepest thoughts and concerns. It's a poignant word that captures the essence of heartbreak.
Vicente Fernández really brings the drama in "Cuando Me Digas"! This song is a powerful declaration of love and utter devotion, even to the point of despair. He's telling his beloved that if she ever says her love is ending, or that his efforts mean nothing to her, then nothing else will matter, not even death.
He sings, "Cuando me digas que tu amor / Va terminando" [When you tell me that your love / Is ending] and "Entonces nada ya ni la muerte / Me importará" [Then nothing, not even death / Will matter to me]. It's a pretty intense sentiment! He believes his very existence is tied to her, stating, "Si el alma entera con mi existencia / En ti dejé" [If my whole soul and my existence / I left in you]. It's a beautiful, if a little heartbreaking, look at a love so profound it defines his entire being.