Echaste a perder is a powerful Spanish idiom that means "you ruined me" or "you spoiled me". It's a phrase you'll hear often in conversation but won't likely find in a textbook.
Literally, it combines echar (to throw) and perder (to lose). The expression is used for food that has spoiled or, in this case, a person who has been broken. In the song, the artist sings, "Me pusiste a ver Los Ángeles y luego me echaste a perder," meaning "You made me see heaven, and then you completely ruined me," capturing the song's core feeling of heartbreak.
Ever had a breakup that made your head spin? That's exactly where Grupo Frontera is in this song. The singer is spending yet another night alone, trying to "Controlar mi mente loca" [Control my crazy mind] that keeps asking if his ex is coming back. He's kicking himself because he made a promise: "Prometí ya no enamorarme / No volver a equivocarme" [I promised not to fall in love / Not to make a mistake again], but he fell for it all over again.
But this isn't just a sad song. The singer is done feeling sorry for himself. He says his ex "Me pusiste a ver Los Ángeles / Y luego me echaste a perder" [You made me see Los Angeles / And then you ruined me]. Now, he's decided "Ya estoy cansado de sufrir" [I'm tired of suffering] and wants her to feel the same pain. His plan is pretty blunt: "Me voy con la primera que yo vea por ahí" [I'm leaving with the first girl I see out there] to make up for lost time. He ends the chorus with a sarcastic little "Que seas feliz" [Be happy], which is a perfect, bitter send-off.