Aparentes comes from the verb aparentar, meaning "to pretend" or "to feign". It's a less common verb than fingir (also "to pretend"), making it a more interesting and nuanced choice.
In the song, the lyrics say, "Y aparentes que estoy fuera de tu vida" (And you pretend that I am out of your life). This word perfectly captures the theme of denial and the struggle to move on, suggesting a deliberate act of deception to oneself and others.
Have you ever tried to convince yourself you're over someone, even when you're clearly not? Vagon Chicano's "No Soy Fácil" [I'm Not Easy] is all about that feeling!
The song is from the perspective of someone who knows their ex is trying to forget them. They see their ex's mind trying to move on, trying to avoid mentioning their name, and even trying to avoid eye contact, all "para olvidarme de lo que vivimos" [to forget what we lived]. But the singer isn't fooled, saying, "tal vez puedas engañar a todo el mundo pero nadie corazón te lo aseguro" [maybe you can fool everyone, but no one, my love, I assure you]. They're confident their ex will be "destinadas a volver a mis brazos" [destined to return to my arms] because they are "lo que más quieres" [what you most want]. Even if their ex's "maldito el mundo te aconseja que me dejes" [damned world advises you to leave me], the singer believes their story isn't over yet: "el fin de nuestra historia todavía no está escrito" [the end of our story is not yet written]. It's a bold and a little bit sassy declaration that some people are just unforgettable!