Vete is the command form of the verb irse, meaning "to go away" or "to leave." It's a very direct and emotionally charged word, much stronger than a simple adiós (goodbye).
In this song, the singer uses Vete to forcefully tell his ex-lover to leave his life for good. This single, powerful word captures the pain and finality of a difficult breakup, making it the central theme of the entire song.
Ever been trapped in a messy love triangle and finally had enough? That is the exact breaking point Grupo Frontera hits in "Vete". The singer admits right away how brutal it is to stay close to someone while knowing they belong to another person: "Nunca pensé que fuera tan difícil tenerte a mi lado sabiendo que tienes a alguien más" [I never thought it would be so hard having you by my side knowing you have someone else]. Instead of begging, he cuts the cord. He drops a sharp warning about karma with "todo da vueltas en la vida" [everything comes back around in life / what goes around comes around], reminding them that having it all right now does not mean it lasts forever.
From there, the track drops all polite small talk. He wishes them well with their new partner, but then demands complete radio silence: "Vete, ya no vuelvas a llamar" [Leave, don't call anymore]. The best line has to be "hazme un favor personal" [do me a personal favor], treating this painful, messy breakup like a simple courtesy request. He acknowledges the sting with "duele, pero te voy a olvidar" [it hurts, but I will forget you], trusting that time will handle the rest while he shuts the door for good.