Arrepentí comes from the verb arrepentirse, meaning "to regret" or "to repent." It's a strong emotional verb that conveys a sense of changing one's mind due to remorse or a realization of a mistake.
In this song, the singer repeatedly states, "Pensaba recomendarte pero ya me arrepentí" (I was thinking of recommending you, but I already regretted it). This phrase is central to the song's theme of a relationship gone sour, where initial good intentions turn into deep regret and a complete change of heart. It's a powerful word that drives the narrative of disillusionment.
Have you ever been so over someone that you can't even pretend to be nice anymore? That's exactly what Regulo Caro is singing about in "Pensaba Recomendarte"! He starts off by saying he thought about being polite, giving a farewell kiss, and wishing them good luck, just for appearances. He even considered telling everyone they were still friends, but then he's like, "la neta no les puedo mentir" (the truth is I can't lie to them).
He quickly changes his mind, declaring, "pensaba recomendarte, pero ya me arrepentí" (I was thinking of recommending you, but I already regret it). Ouch! He makes it clear this person doesn't deserve anyone's pity and that if he spilled the details, they'd look really bad. He even says, "no fue un gusto conocerte como quieres que te diga" (it wasn't a pleasure to meet you, how do you want me to tell you?). Even though he admits he likes their kisses, he still wouldn't recommend them. It's a blunt, honest take on realizing someone isn't worth even a fake goodbye.