Perpetua translates to "perpetual" or "everlasting." It's a strong and somewhat formal word that stands out in a modern reggaeton song.
In the lyrics, Mora sings, "Y si es al lado tuyo que sea perpetua la condena" (And if it's by your side, may the sentence be perpetual). This dramatic line uses "perpetua" to express an intense, all-consuming desire to be with someone forever, even if it feels like a "sentence" or a destined fate. It adds a unique, almost theatrical flair to the declaration of love.
Mora sings to someone he's completely drawn to, comparing her to the sun and admitting he'd cross borders, deserts, and seas just to be near her. He's caught in that restless, anxious pull of attraction, unable to control how he feels whenever she's close or how empty things feel the moment she leaves.
The hook begs her to stay a little longer, framing the relationship as a gamble he's fully committed to: without her he feels like a beach with no sun, an island with no sand, and he'd rather bet everything and lose it all than not try at all.