Juro is the first-person conjugation of the verb jurar, meaning "to swear" or "to take an oath". It's a word packed with emotion and sincerity, used to make a very serious promise.
In this classic ballad, Cristian Castro sings, "Yo te juro que no trataré de olvidarte" (I swear to you that I won't try to forget you). Using juro turns his farewell promise into a powerful, unbreakable vow, showcasing the depth of his feelings even as he's leaving.
This song is one of the most dramatic breakup anthems you'll ever hear! Cristian Castro isn't angry or sad, he's just making a huge promise. His partner has decided to end things, and he accepts it, saying, "Ahora voy a marcharme / Pues tú lo decidiste" (Now I'm going to leave / because you decided it). Before he goes, he gathers up all the good memories, the little details that will always remind him of her.
But here's the twist. He doesn't just say he'll remember her. He swears he won't even try to forget her: "Yo te juro que no trataré de olvidarte" (I swear to you that I won't try to forget you). He wishes her the best, but makes it clear that his love is permanent. He declares, "Yo te quiero a morir sobre todas las cosas" (I love you to death above all things), promising to love her forever, no matter what. It's a powerful and absolute declaration of love that lasts beyond the relationship itself.