Interesting piece. It is written with raw emotions, straight from the heart which is very effective. I don't read friendship/ family poems often but this one is really written in a good way.
In this line:
--As tender and sore as my heart was you let me cry.--
I don't quite understand the construction "my heart was you let me cry" but I'm not sure what sounds wrong about that.
My other suggestion is to change the word "Sucks" in the fifth line. Maybe it's just me, but it ruins the flow in that line a bit.
All in all, you did truly great job.