Translation:

I’ve arrived; the man who wants to make you his, but whose feelings you fail to reciprocate. I’ve made my way to your window, across which I know you’re hiding but avidly listening. I’ve come to serenade you — as I have been doing for many nights now. The truth is, I’ve come so many times that I have ran out of things to say and songs to sing. Furthermore, not having anything to show for all my efforts, sometimes I wish I could damn you and give up, but I can’t; I’ve come to accept the fact that I was born to adore you.

Man, oh man, this luck of mine is failing me. My heart is calling your name, and you fail to respond. For that reason I’ve come to interrupt your sleep. I beg you to forgive my impertinence. I’m just the poor bastard who’s losing sleep over you. I spend my nights hoping that I’ll see the day when you’ll give me the chance to show you my worth.

My luck isn’t too bad, though. I’ve been told things about you, see. I’ve learned about some of your likes and dislikes. Please forgive my cockiness, but I’m quite certain that among your likes is my coming here every night to sing to you. So tomorrow night I’ll be here again, and the mariachis will be with me. In fact, we’ll be at your window every night of your life, until my passion fades. In other words, better stop wishing for a quiet night — it won’t happen… ever. I’ll be singing by your window every night of your life, until you finally give in and allow me to be the most fortunate man on earth… your lover.

So good-night for now, but tomorrow night I shall be back to serenade you some more — whether you’re enjoying this or not!