Desorientado means "disoriented" or "lost". It's a vivid word that goes beyond simply saying "confused" and paints a picture of being truly adrift.
In the song, Luciano Pereyra uses it to describe the profound impact of being lied to. He sings, "Me dejaste tan desorientado, sin brújula, sin dirección" (You left me so disoriented, without a compass, without direction), emphasizing the feeling of being completely lost and without guidance after the betrayal.
Have you ever been completely swept off your feet, only to find out it was all a lie? That's exactly what Luciano Pereyra sings about in "Me Mentiste" [You Lied to Me]. He sees someone across the room, and it's instant love at first sight. He's already imagining a future, thinking, "Esto puede ser para siempre" [This could be forever], and picturing them in his shirt, feeling their touch. It's a whirlwind of emotion, leaving him totally disoriented, "sin brújula, sin dirección" [without a compass, without direction].
But then comes the crushing realization: "Y me mentiste, no estabas sola" [And you lied to me, you weren't alone]. While they were dancing and he was completely smitten, someone else arrives, takes their hand, and gives them a kiss. Ouch! He's left wondering, "Qué voy a hacer para curar esto que siento?" [What am I going to do to heal this I feel?]. It's a classic tale of falling hard and fast, only to have your heart broken by a cruel deception. It's so relatable, right?