Jurao' is a colloquial, shortened form of "jurado," which means "sworn" or "I swear." It's a common informal expression in Spanish, especially in casual conversation and song lyrics.
In this song, the artist uses it to emphasize the finality of his statement: "Esta es la última canción que te escribo, jurao'" (This is the last song I'm writing for you, I swear). It adds a raw, authentic, and emphatic tone to his declaration, making it more impactful than the standard "jurado."
Cruz Cafuné and Sofi de la Torre's "Doble Tick Azul" is a really relatable song about the pain of a breakup and trying to move on when you're still hung up on someone. The title itself, "Doble Tick Azul" (double blue tick), refers to the read receipts on messaging apps, instantly setting the scene for unread messages and unanswered calls. He sings, "Llamé ayer y antes de ayer / No respondiste" (I called yesterday and the day before / You didn't answer), which perfectly captures that frustrating feeling of being ignored.
He's clearly struggling, admitting, "Esta es la última canción que te escribo, jurao'" (This is the last song I'm writing for you, I swear), but then immediately follows it with "Te quiero" (I love you), showing how conflicted he is. He's trying to erase her from his life, saying, "Borré tu nombre del teléfono / Saqué tu foto de la cartera" (I deleted your name from my phone / I took your photo out of my wallet). But it's not just his own feelings he's dealing with; his friends and family are worried, and her family is still reaching out, making it even harder to forget. He even says, "Soy un corazón roto" (I am a broken heart), which is such a direct and honest way to put it. It's a raw look at the messy process of heartbreak.