Bendita locura translates to "blessed madness" or "blessed craziness." It's an evocative phrase that captures a feeling of being joyfully overwhelmed or consumed by an intense emotion, often love, to the point of feeling a bit crazy, but in a good way.
In the context of "Me Muero X Ti," Vicco uses this phrase to describe the exhilarating and slightly wild feeling of falling deeply in love. It highlights the intoxicating and all-consuming nature of her feelings, suggesting that this intense love is a wonderful, almost divine, form of madness.
"Me Muero X Ti" is about the rush of falling hard for someone new. Vicco sings about a person he can't stop thinking about, replaying a night together in the car with a few too many drinks and a face he can't get out of his head.
The chorus leans on a common Spanish expression, "me muero por ti," which literally means "I'm dying for you" but really just means wanting someone badly. He wants to know everything about them and see where things could go.
By the second verse the feelings turn a little bigger than life: catching a flight to Mars together, passing the moon, becoming two stars in the universe. It's the kind of over-the-top imagery that fits a new crush perfectly, when time feels like it's moving faster and every moment together feels bigger than it is.