Did I do wrong?

Why are you doing this to me?
All I've given you
The whole lot of me
Why can't you give yours to me?
I have given you my 100%
But you've given me less
Did I do something
That you didn't like?
Tell me, am I not enough?
Am I that bad for you?
Would you like to say goodbye
But can't and don't want to hurt me?
Its all right to me
As long as your happy
But always remember
I am here for you
If you needed me
I just want to ask you something
Did you find someone
That is more than me?
Please tell me the truth
It's all right but just make sure
She won't leave you hurt
Coz for sure, I'll haunt her til the end.