Embrujaste is the past tense of the verb embrujar, which means "to bewitch" or "to cast a spell on". It's a dramatic, magical word that you don't hear every day, evoking images of witches and potions.
In the song, the singer is so unable to forget his ex that he wonders if she put a spell on him. He asks, "¿Será que embrujaste a este viejo triste?" (Could it be that you bewitched this sad old man?). He uses this word to describe a love that feels like an unbreakable, supernatural curse.
This song is one of the most direct breakup anthems you'll ever hear. Los Gemelos De Sinaloa and Óscar Maydon are not holding back their feelings. The singer is a complete wreck after being left by his ex, admitting, "Solo triste me dejaste / Ahora soy yo un desmadre" (You left me just sad / Now I'm a mess). He's trying to move on by seeing other people, but it's not working at all. He complains, "Me la paso con tres morras, pero no te olvido" (I spend my time with three girls, but I don't forget you).
The whole song is a mix of sadness, anger, and total frustration. One minute he's saying he's been left with permanent emotional scars, "Me dejaste cicatrices" (You left me scars), and the next he's just unloading with some seriously intense insults. He blames her for everything, from his drinking to his emotional state, saying "Por tu culpa ando pisteando / Me dejaste bien dañado" (It's your fault I'm drinking / You left me really damaged). It's the sound of someone who is completely heartbroken and lashing out because they don't know what else to do.