So I'll start, and I'm apologizing before hand if you do not like any part of my comment...But you will not because i love this poem.

Let me start by telling the main stuff...
You need to punctuate your poem dear.I guess you use something other than a computer to put these poems here that is why most of yours or should I say all your poems start with a capital letter on every new line.Leave all that.

I love your poem.I love this concept.Everyone should learn to let go of people who don't care about them.This can be because either I might have gone through this stuff or maybe I didn't(I've got a bad memory.No, actually I tend to delete memories of stuff I don't wanna remember)..

Sorry for the blabbering mori...

Okay I'll start properly now....

"Our friendship came to an end
The day you said you wanted to avoid me
It broke my heart, it shattered my belief in
"friendship"
I never did anything wrong
If I was headstrong that was because
I couldn't and wouldn't see my friend
Fall down that stupid rabbit hole that you so loved"
^ This para kind of sums up everything that might have happened which is leading you to write this poem.It is true when someone says they don't wanna talk to you and avoid you, it breaks us inside and makes us think, was all of this even worth it and why are we being punished and shattering when we aren't even wrong?...And you say that you were strong enough to let this person go.

"I set you free
As you desired,
You won't hear me beg for another chance
It was your fault our friendship ended"
^ So yes your friendship ended and you let this person go just how he?she wished.It's good to kick people out of your life if they don't want to be in it and if they are not worth it.And we shouldn't beg them to stay atleast not when the mistake is on the other person's part.

"Hope you know that you're the reason
That I won't trust new "friends"
They'll backstab me and hurt me emotionally
"Fool me once shame on you,
Fool me twice shame on me."
That's my favorite quote
Because it's so damn true"
^Once a person who means the whole world leaves, we lose all our trust in friendship and stuff.We just believe that everyone will be like that. We do not take the risk of putting all our faith in people on the line.
I love how you write this.Using famous quotes to justify your statements or feelings adds the awesomeness to your poem.I guess I sound crazy right now.

Hope you well sweet "friend"
May you drink yourself to an end
Because I won't ever be hurt by you
Ever again.
^I love your ending too because it shows that you are now over this persons love(friendship) and wish he hurts himself just the way he tried to hurt you but you were strong and couldn't or maybe you are still not over this person but trying to make yourself believe by saying all this( that would be so me :P)....
And i love how you say you will never be hurt by him/her ever again..

Over all, very well written and I wish you all the best with this friendship if this incidence is true. :) You really have put out all your feelings very well, if they are feelings.

Well done.

Sorry with the blabbering mori.

A strong piece full of emotion and grief for a lost friendship.
The sense of hurt, betrayal and bitterness comes over so strongly here it is almost tangible. I felt so sad at the end as their differences appear irreconcilable it left me with a real sense of loss.
The only criticism I have is that it would flow much better without the capitals at the start of each line. It really plays havoc with the punctuation. Other than that. I really liked it :)

I can't say that I am a fan of the message in this piece, but since I agreed to comment, this is on the technicality of the piece:

The word choice is well picked and the formation is interesting. Your style is well done and the flow is decent if nothing else. The last two lines show your voice in a painful, vengeful sort of way, but they were definitely an impacting conclusion.

Interestingly penned

Damn...... Now I know why you wrote this... :'(
I'm sorry for you mori Chan...
But don't give up on friendship, it is a beautiful thing.

This poem is sad ofcourse but strong in spirit... I hate when things go wrong >_< but sometimes u gotta step up and say step off bishhhh o_o

maybe things are better without them anyway right? yea OK keep writing!!

V. touching and deep. I think you keep on penning this way.