I can't keep forgiving you

I can't keep forgiving you
For all the things you say and do
You broke my heart too many times before
And you just leave me wanting more

You deceived my trust
Mixture of anger, jealousy, and most of all lust
I forgive and forget time and again
But nothing can ever extinguish the pain

Now I know I've been wrong
You've been using me all along
I shouldn't stay and sink deeper
I'll just become a lifeless weeper

I've been getting rid of our past
I know we weren't fated to last
You have no more place in my heart
I'm glad of your final depart

I understand much better now
I know exactly why and how
I'm gonna execute this action plan
It's not impossible; I know I can

I won't think of you anymore
This way I won't be feeling sore
From this moment I won't come near
Your very name is what I fear

It was time to forget long ago
But I only just learnt how to say "No"
I'm sorry I can't keep forgiving you
So now I say, boy, we're through