Hecho cuadritos literally translates to "made into little squares". This colorful idiom is a very expressive way to say you're smitten, head-over-heels, or completely crazy about someone.
In the song, the line "¿Cómo te explico? Me tienes hecho cuadritos" (How do I explain it? You have me smitten) captures the feeling of being totally captivated and overwhelmed by love. It's a memorable phrase that paints a vivid picture of being completely disarmed by another person's charm.
This song is all about that moment when you try to play it cool but you're already completely head over heels for someone. Becky G starts by admitting she's trying to hide her feelings, singing, "Si me preguntan diré que no / Pero estoy sintiendo celitos por ti" (If they ask me, I'll say no / But I'm feeling a little jealous of you). She was the girl who "no quería querer" (didn't want to love), but now she's totally hooked and counting the days to see him again.
The chorus is where things get really fun and direct. She just throws it all out there, asking, "Dime qué haces / Este viernes y el resto de tu vida" (Tell me what you're doing / This Friday and the rest of your life). It's such a bold move! She then lays out all the possibilities, from casual to life-changing: "¿Nos vemos o qué? ¿Nos casamos o qué? ¿O nos comemos y que el tiempo decida?" (Do we see each other or what? Do we get married or what? Or do we hook up and let time decide?). Manuel Turizo's response is just as confident, promising he's ready for whatever plan she has. It's a playful and passionate back-and-forth about two people who are ready to jump into something serious, or at least have a lot of fun figuring it out.