Aferro comes from the verb aferrarse, meaning to cling, hold on tight, or stick to something with determination, even when it might be better to let go.
The singer admits "Yo me aferro y ya no veo pa' atrás" ("I cling and I don't see pa' back"), using the word to show how stubbornly he holds on to someone instead of moving forward.
Christian Nodal and Nunca Jamas bring us a super fun, rebellious track with "Bésame Ya"! This song is all about throwing caution to the wind and giving in to a passionate, maybe even a little dangerous, attraction. Our singer knows this person might be trouble, even saying, "Pero en el infierno no te quieren recibir" [But in hell, they don't want to receive you]. He admits to having a bad reputation himself, but hilariously adds, "pero la tuya es peor" [but yours is worse]!
He's fully aware that getting involved will probably hurt him, declaring, "Va a valer lo que me va a doler" [It will be worth what it's going to hurt me]. But he doesn't care! He's tried this person's kisses, he liked them, and now he wants more. He's ready to be consumed, asking them to "Como el cigarro, ven, fúmame / Como el tequila, ven, tómame" [Like a cigarette, come, smoke me / Like tequila, come, drink me]. He just wants them to stop threatening and "bésame ya" [kiss me now]!