Arrojarte literally means "to throw yourself". While it can imply a physical act, in this song, it carries a deeper, more emotional weight.
El Chacal uses it to express the idea of surrendering completely to love or desire, even when he initially didn't want to fall in love. He sings, "yo tuve corazón como me toca arrojarte" (I had a heart as it's my turn to surrender to you), suggesting a powerful, almost involuntary giving in to his feelings. This makes it an interesting and evocative word choice.
Have you ever had a plan go completely wrong in the best way possible? In "Una Noche Más," El Chacal tells the story of a one-night stand that turned into something much more. His original intention was simple: just one night, and then he'd forget her and never look for her again. He was so sure he wouldn't fall in love, but as he sings, "Mala suerte la mía" (My bad luck).
Now, he finds himself completely captivated. He spends his nights looking at her photos on his phone, going crazy thinking about her, and realizing he's "muriendo de amor" (dying of love). The song is his desperate plea for just "una noche más" (one more night), hoping to turn a fleeting adventure into a real romance. He puts it all on the line, telling her that while he could drink to forget this "locura" (craziness), he'd rather love her and take her to the moon, because she holds the cure to his lovesickness.