Envidiosa translates to "envious" or "jealous". While jealousy is a common human emotion, this word is particularly interesting because it describes a specific type of negative feeling directed at someone else's possessions or success.
In the song, Diomedes Diaz uses it to refer to "la gente envidiosa" (the envious people) who try to break up his relationship. It's a strong word that highlights the external conflict in the song and is less common than everyday terms for emotions, making it memorable and engaging.
Diomedes Diaz spends the first verse pushing back on gossip: "Yo no comprendo por que razon te viven diciendo que pierdes tu tiempo conmigo" ("I don't understand why they keep telling you you're wasting your time with me"). He blames it on envy, admits the fight is real, and then pivots straight into a vow, repeating "Te hare feliz, cueste lo que cueste" ("I'll make you happy, whatever it costs") four times in a row like he's making sure it lands.
The second half doubles down instead of easing off. He names exactly what the gossips want, "que peleemos" ("for us to fight"), and shuts it down flat: "ni en suenos lo lograran" ("not even in their dreams will they manage it"). By the closing refrain he's stopped defending the relationship and is just stating it as fact: "Mi reina, yo soy para ti, lo mismo que tu eres pa' mi" ("My queen, I'm yours, the same way you're mine").