Pelabas comes from the verb pelar, which literally means "to peel" or "to skin." However, in Mexican slang, especially in informal contexts, "no pelar a alguien" means "to ignore someone" or "not to pay attention to someone."
In the song, the lyric "pero tú nunca me pelabas" perfectly captures the feeling of unrequited attention. The singer is expressing that, despite his efforts, the person he was interested in never gave him the time of day, making it a relatable and engaging word choice for learners.
Have you ever had a crush who totally ignored you, only to come crawling back once you started shining? That's exactly what Grupo Marca Registrada is singing about in "Eres Mi Crush"! The singer remembers a time when he was really into someone, saying, "Hace tiempo estaba tras de ti, pero tú nunca me pelabas" [A while ago I was after you, but you never paid attention to me]. He even tried sliding into their DMs, but his messages were ignored. Ouch!
But oh, how the tables have turned! Now that he's doing well and getting attention, the person who once ignored him is suddenly interested, sending him friend requests and asking about him. He's a bit cheeky about it, suggesting a quick hook-up: "Nos miramos un ratito y después nos decimos adiós" [We see each other for a bit and then we say goodbye]. It's a fun, slightly sassy take on getting the last laugh after being overlooked!