It’s a good question Mr. Brain and here’s my analyzing : Because man in Arabic culture should hide his feelings towards the woman he loves (in the earlier ages ), and try not to announce what he feels in public because of the old customs which were authorized those days , so he try to send his emotions to her as if he speaking to another man , although the woman already have known that she is the intended one . it’s heritage transferred from generation to another

Hello Brian, Building on what Salah Ahmad said, it might be a convention that dates back to love poems in Classical Arabic poetry, which are also often addressed to someone who is gramatically male. Alvin

I have learned something new today, thanks for your question and answers.

I agree with you Mr.Brain,it is something strange but most of these songs aren't written in MSA . By the way in Arabic ,if there is male and more than one female are setting in one place you can call them by أنتم not أنتن which is called تغليب المذكر .But our case is completely different.