Diluvio literally translates to "deluge" or "flood", often used in a biblical sense like "The Great Flood". It's a powerful and dramatic word that you won't hear in a song every day.
In this steamy bachata, Rauw Alejandro uses it metaphorically to describe an overwhelming rush of passion. He sings, "un diluvio en tu cuerpo" (a flood in your body), to express the intense physical reaction he can cause with just a simple wink. This poetic exaggeration makes it a truly memorable word to learn.
Rauw Alejandro is feeling the distance in his relationship, and he has a very direct solution in mind. He opens the song by saying he can't even remember the last time they were intimate, and jokes, "La cama piensa que somos hermanos" [The bed thinks we're siblings]. The passion they once had, where they had to be quiet not to disturb the neighbors, has disappeared, and he misses it.
Instead of arguing, he suggests they reconnect physically. He's tired of fighting and wants to replace arguments with passion. His proposal is pretty blunt: "Si es que surge un argumento, escoge tú la posición" [If an argument comes up, you choose the position]. He even says, "No me alces la voz, mejor grítame en la cama" [Don't raise your voice at me, better to scream for me in bed]. It's a song about trying to solve emotional problems with physical connection, hoping to bring back the heat that's been lost.