So it's all about blame

You hardly blame me
When you own it all yourself
You did all the things
That led to this
But still you hardly blame me?
You told me to trust you
You made me a vow
You broke your word
But it's my fault somehow?
You couldn't handle responsibility
You couldn't take the fear
But you stepped up to the plate
Then ran away, my dear
But somehow it's my fault?
I should take the blame?
You gave me more excuses
You covered up your crime
Yet you claimed we were both, out of our mind?
I never ran away, I fought and I tried
It was my head on the chopping block, and yet you lied
I did all the work and I gave all the effort
You claimed you tried to do the right thing?
You make my brain hurt
I'm supposed to take you at your word
Sight unseen, not trust what I heard?
You were the one who ran away
You were the one who couldn't tell the truth
But I'm supposed to take your word, without any proof?
You hate how this turned out and you wish it weren't so
But I haven't seen you do anything else, your words are all for show
I'm the one who was left behind, when all is said and done
While you went off to wherever to just have some fun
You claim you're not like that, but that's still what you did
So tell me who should I believe?
Or shall you tell another fib?
Whenever you needed me, I was always there
All I ever asked from you was the same
And yet you never even cared
So I said goodbye, you think I threw it all away
But I ask myself, why should I let you stay?
Look in the mirror, you trashed it all yourself
I had to walk away, for my own health
You can claim you hate it
You can claim it makes you cry
You can stare into the mock torture
But I know it's all a lie
The smile on your face
The laughter in your eyes
Tells me that there's no disgrace
Just more pathetic lies
And when nostalgia hits me and I think of you
I can return to see, all you put me through