Maldito anillo translates to "damned ring." While maldito means "damned" or "cursed," its use here is more of an intensifier, expressing strong regret or frustration.
In the song, the singer laments, "Si el maldito anillo me hubieras aceptado" (If you had accepted the damned ring). This phrase is particularly enticing because it hints at a dramatic backstory involving a rejected marriage proposal, making listeners curious about the full narrative of lost love and what could have been.
"Cadáver de la Novia" turns a breakup into something almost gothic: the title means "corpse bride," and Gabito Ballesteros and Óscar Maydon build the whole song around that image. The love in these lyrics is already dead, but the singer won't bury it. "En el cielo, el infierno, no importa yo seguiré" [In heaven, in hell, it doesn't matter, I'll keep going] isn't a metaphor he's using loosely; the whole song commits to it.
The specific regret is a marriage proposal she said no to: "Si el maldito anillo me hubieras aceptado" [If you'd accepted the damn ring]. That's the line the rest of the song orbits, including its hook, "Presente, pasado, pasado, futuro" [Present, past, past, future], repeated like he's trying to make the timeline make sense. He keeps telling himself "Que aún me extrañas" [that you still miss me], which sounds less like confidence and more like a guy who needs it to be true.