Los Auténticos Decadentes bring us a song about the bittersweet sting of a love that was, perhaps, never truly real. Our singer thought he'd found love, falling head over heels, only to be left alone.
He's stuck remembering those sweet moments, now just a longing, realizing it was all a "fantasía fugaz" [fleeting fantasy]. He dreamed of happiness with this person, and now he's awake, back to reality, and they're gone. The song repeats this feeling of being left with only illusion, still hoping they'll return, even though deep down he suspects it was just a dream. It's that classic feeling of being promised a return – "Dijiste que pronto ibas a regresar" [You said you'd come back soon] – and holding onto that hope, even when your head tells you it was all just a beautiful mirage.