Pórtate bien is a common Spanish phrase that means "behave yourself" or "act properly." While it might seem simple, its directness and use in this song make it quite impactful.
In the context of the lyrics, the singer is directly warning someone to change their behavior, or they will lose him. It's a strong, assertive command that drives the central theme of the song, making it memorable and relatable for anyone who has ever had to set boundaries in a relationship.
Tomas Ballardo's "Portate Bien" is a direct message to a jealous partner, laying down the law about what he won't tolerate in a relationship. He's tired of the constant questioning and accusations, making it clear that he doesn't like them "tomando el tiempo" [taking my time] or playing detective. He even brings his mother into it, stating that the only person he answers to is her: "si ya hay alguien a que no le rindo cuentas y esta mujer es mi madre" [if there's anyone I don't answer to, it's my mother].
The chorus is a blunt warning: "Pórtate bien porque es seguro y me vas a perder" [Behave yourself because you're surely going to lose me]. He's at his limit, saying he's "cansé de contar hasta 10" [tired of counting to 10] and that another dramatic action will make him leave like a bullet. He's not interested in discussing past hours or suspicions of infidelity, telling his partner to "mejor vete acostumbrado" [you better get used to it] because he's not going to put up with it. It's a no-nonsense declaration that he's ready to walk away if things don't change.