Secret Admirer (part 1)

As each day goes by
You get as beautiful as ever
So I've written my feelings
In this one simple letter

You don't know who I am
But I sure know you
So I'll give you a chance
I'll give you this clue :

I love writing in poem
I have friends who you know
The'll tell you who I am
But I told them, "not now"

That clue makes you wonder
How mysterious I am
You needn't think nor ponder
For it'll come like a lamb

These riddles must hurt
You should take a break
I want you to rest
For heaven's sake