Why can't you let go

I understand you're in pain
but when does that justify hurting
I know what i did was wrong
But why can't you forgive.
I know you've been waiting
For the chance to get back
At me for what I've done
To hurt you in the past

But let me tell you something
Some small words of advice
An eye for an eye makes the world go blind
So why cant you let it go
And get on with your life.