Who Am I?

I have been your blanket

I have been your pillow

I have been your raincoat

And will be your umbrella

I can be a disguise

And an accessory

I will protect you on the road

To wherever you’re going

I have hidden things for you

And I will be a shadow

When you need to hide

I have been your statement

I have allowed you to beat me

And been better for it

I keep you cool

But I also keep you warm

I am as timeless and as

Necessary as time itself

I have been your lover’s crying shoulder

Who am I?