Devorar literally means "to devour" or "to eat ravenously". While it can be used in its literal sense, in many romantic or sensual contexts, it takes on a more passionate and intense meaning.
In this song, Nicky Jam uses "Baby, te voy a devorar" to express an intense desire and passion for his partner. It implies a strong, almost overwhelming urge to consume or be completely absorbed by the other person, conveying a powerful sense of longing and intimacy rather than literal eating.
The title is a text message. BB XFA is how you type "bebé, por favor" when you are in a hurry, and the chorus spells it out: "Bebé, por favor, no digas que no" [Baby, please don't say no]. Nicky Jam spends the whole song asking, and never quite gets an answer.
He opens with the room as a witness: "Si las paredes hablaran, qué no dijeran" [If walls could talk, what wouldn't they say?]. From there the pitch turns into a boast and then into a confession. He offers her everything he has, "Coge el cash que tengo en la cartera" [Take the cash I have in my wallet], he insists nobody else measures up, and then he gives himself away with "Que ya necesito' más, que tu dosi' es mi adicción" [Because I need more, your dose is my addiction]. He is not the one in charge here, and the easy confidence of the delivery only makes that funnier.