Sagrado translates to "sacred" or "holy." It's an interesting word choice in this context because it elevates something typically mundane to a higher, more revered status.
In the song, Maluma sings, "Lo trabaja sagrado ese cuerpo / No cualquiera entra a ese templo" (That body works it sacredly / Not just anyone enters that temple). He uses "sagrado" to describe the woman's body and her dedication to it, implying it's something precious and exclusive, like a temple that only a select few can enter. This metaphorical use makes the word stand out.
Maluma keeps this one blunt. His hookup just got out of a relationship, and “Hace un mes / Que se dejó con el ex” [“It's been a month / Since she broke up with her ex”] is doing double duty as both the timeline and the whole plot. She's not looking for anything serious, she's using him to get over someone else, and he's fine with that arrangement: “Ahora me tira por text / Para liberar el estrés, yes” [“Now she hits me up by text / To relieve stress, yes”].
The verses fill in the rest without much sentiment. He opens by naming the terms directly: “En una relación no estamos, pero nos gustamo'” [“We're not in a relationship, but we like each other”], and later there's a joke about volume, “La pongo a gritar como Adele” [“I make her scream like Adele”]. That's about as far as the song reaches: two people who agree not to complicate things, over a beat built for exactly that.