"TE PERDÍ" (I lost you) is a breakup song from the guy who knows the breakup is his fault. It opens with a perfect hangover image: "Con los ojos llenos de lágrimas y el aliento apestando a tequila" (with my eyes full of tears and my breath stinking of tequila), he says goodbye. He doesn't blame her, "no eres dramática" (you're not being dramatic), and then he says the most contradictory thing a heartbroken man can say: "te quiero, te adoro, te amo, pero corre de aquí" (I love you, I adore you, I love you, but run away from here). He loves her and still tells her to get out, because he knows he's bad for her.
The chorus is pure regret. "Puta madre, es que te extraño" (damn it, I just miss you) uses a strong Mexican swear as a sigh of frustration, and "aunque hoy somos dos extraños" (even though today we're two strangers) plays extraño (I miss) against extraños (strangers). He admits what went wrong: he got lost in "la loquera" (the craziness, the party life), money and problems, he stopped talking to her at night, and "No siempre estuve ocupado" (I wasn't always busy) is him owning up that he just didn't make time. "Mandé a la verga el plan" is crude slang for "I sent the plan to hell". The last line hurts most: "Dime hace cuánto te perdí" (tell me how long ago I lost you). He didn't even notice when it happened. Los Ondeados in the outro is Calle 24's own nickname for their crew.