Traumado means "traumatized" or "scarred". It's an interesting word choice because the singer immediately denies being traumatized, even though the entire song is about him giving advice to his ex-girlfriend's new partner.
This creates a sense of dramatic irony and makes the listener wonder if he is, in fact, still deeply affected by the breakup. It's a word that hints at deeper emotions beneath the surface.
Ever wondered what a phone call between an ex-boyfriend and the new boyfriend sounds like? In "Antes De Usted," Banda Los Recoditos gives us a front-row seat to this very awkward conversation. The singer calls his "querido amigo" (dear friend) to talk about the woman who is now with him. He admits he's still heartbroken and can't forget the nights she spent with him, but he insists the call is just to ask for a small favor.
This "favor" is actually a mix of advice and a warning. The singer tells the new boyfriend how to treat her right: be tender, give her lots of love, and don't make the same mistakes he did. But there's a catch! He warns the new guy to take good care of her, because if he makes even one mistake, the singer is ready to jump right back in. The final line is a powerful reminder: "No se le olvide que antes de usted estuve yo" (Don't forget that I was there before you).