Aferrado comes from the verb 'aferrarse', meaning to cling or hold on tightly to someone or something. It's a strong, physical word that paints a vivid picture of refusing to let go, even when it may hurt.
The singer admits his doubt with it: "No sé si seguiré aferrado de ti" ("I don't know if I'll keep clinging to you"), showing the tension between wanting to hold on and knowing it might be time to let go.
Ramón Vega's "BeSos AL VIEnTo :(" is a really relatable song about trying to get over someone, but just not being able to. He sings, "No te olvido por más que lo intento" [I don't forget you no matter how much I try], which perfectly sets the mood. He's tired of "darle besos al viento" [giving kisses to the wind], wishing he could relive those moments and kiss his ex again, never letting go.
He even mentions writing "cien canciones pa' ti" [a hundred songs for you]! It's clear he's still holding onto the memory of what they had, even though he wonders if his ex even remembers him. He's so stuck that he's even told his mom about it, but even she couldn't give him good advice. He didn't want to tell his dad because his dad always said that girl wasn't for him. It's a really honest look at how hard it is to move on when you're still completely hung up on someone.