What is?

Letter to you

I hope they can treat you
How you deserve to be treated
By someone who really loves you
For you deserve the best, you said
As you read this in a letter
A post, a note
Someone who is better
Something I wrote
I cannot bear the thought of you
With another soul
Unless they care for you how I would like to
While I stay to myself, heart turning black as coal
I do not care for me
All I want is what is best for you
I continue to write under this tree
Someone who loves you too
I finish this letter
Signed with my penmanship
I say in my mind, I am not a regretter
As I send this to you, letting my heart rip