Todavía means "still" or "yet". While it's a common word, its placement and implication in this song make it incredibly impactful and a bit chilling.
The singer asserts, "La tengo toda en mi poder / Y si no has vuelto es porque / Yo no he querido todavía" (I have her completely in my power / And if you haven't returned it's because / I haven't wanted to yet). This reveals a manipulative and controlling dynamic, where the speaker believes they hold all the power in the relationship, making the word "todavía" a key to understanding the song's darker undertones.
Neto Bernal's "Cuando Yo Quiera Has De Volver" is a bold and confident declaration from someone who believes they have complete control over a past lover. The singer isn't buying any of the ex's talk about moving on, saying, "Sigue diciendo por ahí que ya no volverás conmigo" [Keep saying out there that you won't come back to me]. He thinks it's all a show to fool others, and he simply doesn't care about their "mentiras" [lies].
What makes this song so striking is the singer's absolute certainty: "Cuando yo quiera has de volver" [When I want you to, you will return]. He believes it's entirely up to him, stating, "Si todo está en que yo decida" [If it's all up to me to decide]. He even challenges the ex to "Pídele a Dios que te lo diga" [Ask God to tell you]. The reason for this confidence? He claims, "tu vida la tengo toda en mi poder" [I have your whole life in my power]. It's a pretty intense and unforgettable take on a breakup!