Desvivo comes from the verb desvivirse, which means to go out of one's way, to exert oneself greatly, or to sacrifice oneself for someone or something. It implies a deep level of devotion and effort.
In the song, Tiago PZK sings, "Y te juro que por ti no me desvivo" (And I swear to you that I don't go out of my way for you). This line is particularly interesting because it's a negation, suggesting a complex emotional state where he's trying to detach or protect himself, despite the pain he feels. It's a less common verb that adds a layer of nuanced emotion to the lyrics.
Tiago PZK's