Brindando means "toasting" or "making a toast." It's an interesting word because it evokes a sense of celebration and camaraderie, often associated with good times.
However, in this song, the lyrics say, "Brindando con el corazón roto" (Toasting with a broken heart). This creates a powerful contrast, showing the protagonist's resilience and determination to move on despite her pain. It's a memorable image of finding strength in vulnerability.
The whole song happens in the twenty minutes before going out. She puts on sunglasses that match her bag and checks that her face is dry: "Ella se puso las Ray-Ban, combina con la cartera" (she put on her Ray-Bans, they match the purse), then "Se secó las lágrimas, no quiere que nada duela" (she dried her tears, she doesn't want anything to hurt). Aitana keeps the camera on those small decisions instead of on the breakup, and the best one is pure strategy: "Si su novio no la vio, sale para que otro la vea" (if her boyfriend didn't see her, she goes out so someone else will).
The chorus is a promise she repeats until it holds: "Dice que por un hombre nunca vuelve a llorar" (she says she'll never cry over a man again). Notice what it does not claim. She wants a night out, not a clean break: "No quiere borrar, no quiere olvidar" (she doesn't want to delete, she doesn't want to forget), and two verses later the same line turns into "Hoy quiere tomar, hoy quiere olvidar" (today she wants to drink, today she wants to forget), which is about as honest as a night out gets. The giveaway is the phone: "Dejó el móvil para que nadie la localice" (she left her phone so nobody can find her). You leave your phone at home when there is one specific person you are afraid of hearing from.