Coraje is a fascinating word with a double meaning. While it can translate to "courage", in Mexico and many parts of Latin America, it's more commonly used to mean "anger" or "rage".
In this song, Ivan Cornejo sings the emotional line, "De coraje me llenaste" (You filled me with anger). He uses this powerful word to express the deep frustration and hurt of a painful breakup, making it a perfect word to learn for expressing intense feelings.
Ivan Cornejo jumps straight into the messiness of late-night regret here. After having a few drinks, he admits, "Ya me entró el alcohol y me llené con ganas de salir y buscarme a alguien que ame como tú" ("The alcohol hit me and I got the urge to go out and look for someone who loves like you"). He is dealing with a terrible case of heartbreak, bluntly saying "este amor duele cabrón" ("this love hurts like hell"). The slang word cabrón adds intense, frustrated emphasis to how painful the breakup feels. He even considered packing up and moving far away so he wouldn't remember the treasure he lost, but he quickly gives up on that idea because he cannot picture life without his ex.
Instead of moving on, he begs for a clean slate: "Piénsalo, tú y yo empezamos desde cero como antes" ("Think about it, you and I start from scratch like before"). He proposes starting over without jealousy, promising to do things right this time—before quickly blurting out that he does not care if they do it right or wrong, as long as she is his. He delivers a great, dramatic line about how stuck he is on her: "Sin pagar la renta vives en mí" ("You live inside me rent-free"). Cracking open beer after beer ("bote tras bote"), he writes down his feelings and tells her to blame him for anything she wants, as long as she does not stop loving him.