Colapso literally translates to "collapse" or "breakdown". It's a strong and evocative word that captures a moment of intense emotional or mental failure.
In the song, the lyric "Solo fue un colapso" (It was just a collapse) refers to a temporary emotional breakdown or a difficult period in a relationship. It suggests that the struggles are not permanent, offering a glimmer of hope that things might improve, even if the outcome for the singer is uncertain.
"Colapso" is about the shaky middle of a relationship, not its end. Kevin Kaarl sings from a place of doubt, thinking his partner has already left and praying for the strength to hold on when he feels like giving up.
A second voice answers him, reassuring him that she still loves him and that what they're going through is just a rough patch, a colapso, and that things will feel bright again soon.
By the end, the song settles into a quiet promise: whatever happens, he's still there for her, today and every day after.