Cobijo is a tender and somewhat uncommon verb that means "to shelter" or "to give refuge." It's a much more poetic and intimate choice than the everyday word proteger (to protect).
In this romantic song, the singer promises, "si tienes miedo con mi abrazo te cobijo" (if you are afraid, with my embrace I shelter you). This use transforms a simple hug into a profound and safe haven, showing a deep level of care and making it a beautifully memorable word.
This song is a straight-up declaration of intense, head-over-heels love. The singer is completely captivated by someone, listing all the little things he adores, from her eyes and mouth to her hands and the way she hugs. He's not just a little in love; he's completely consumed. He calls her his "vicio" [vice] and his "debilidad" [weakness], showing that his feelings are so strong they feel like an addiction he can't control.
He takes the intensity even further by saying, "Eres mi droga perfecta, si no te tengo me muero" [You are my perfect drug, if I don't have you, I'll die]. It's a dramatic and passionate way to say she's become essential to his life. He promises to be her protector, offering to be her coat if she's cold and to shelter her with his hugs if she's scared. It's a song about a love that feels all-encompassing, where his whole "universo solo gira en torno a ti" [universe only revolves around you].