Friends...guess who

Guess...

You know me well...
Not well enough
You were there to hold me
When things were tough.

You made me see
What wrong I did
Grateful I, will bee.
You knew what I hid.

Although you are a precious treasure
You never knew your worth in gold.
Smile for it will give you pleasure
How sweet you are, you were never told.

And if you're ever sad or blue,
Remember I will always be there for you.
I cried a tear for you today,
In hope that your problems subside away.

But can you guess to who I am...
You should know by this end&;#8230;
FOR I AM YOUR FRIEND!