Delirando comes from the verb delirar, meaning to be delirious or to rave. It's a strong word that goes beyond simply being in love.
In the song, the singer says, "Paso el día delirando con tu amor alucinando" (I spend the day delirious, hallucinating with your love). This vividly conveys an intense, almost overwhelming state of obsession and passion, making it a captivating choice for a push notification.
Los Amigos Invisibles wrote this one for the dance floor. The verses keep the setup simple: "Yo nací para quererte" [I was born to love you], "Yo nací para mimarte" [I was born to pamper you], "Yo nací para adorarte" [I was born to adore you], three ways of saying the same crush before the chorus turns "loco" into the whole point of the song.
By the last verse the joke gets bigger. He wants someone to fix "Que me quite este dolor" [Let me take away this pain] and "Que me quite la locura de este amor" [Let me take away the madness of this love], then undercuts the whole complaint with the closing line: "(Yo no estoy loco yo lo que estoy es planetario)" [(I'm not crazy, what I am is planetary)]. He isn't backing down from being crazy about her. He's just renaming it.