Pesadilla translates to "nightmare." It's a vivid and emotionally charged word that stands out from the more common vocabulary in the lyrics.
In the song, the singer uses it to describe a painful situation they wish to escape: "para despertarme esta pesadilla" (to wake me up from this nightmare). This metaphorical use of "pesadilla" to represent a difficult reality makes it an interesting and relatable word for learners.
This song captures the raw, one-sided pain of a breakup. The singer is stuck in a loop, remembering the past and missing their ex, feeling the pain grow with each passing day. They express a deep sense of loneliness, singing, "mientras yo me muero por estar contigo" (while I'm dying to be with you).
Meanwhile, the singer imagines their ex has completely moved on, forgetting them and having fun with friends. This creates a powerful internal conflict: they desperately want to get this person out of their life for good, but admit it's incredibly difficult because they're still in love. The song is a heartfelt plea for the emotional wound to finally heal, capturing the difficult journey of trying to let someone go when your heart isn't ready.