Why?

How many times do I have to try to tell you
That I'm sorry for the things I've done
But when I start to try to tell you
That's when you have to tell me
Hey, this kind of trouble's only just begun
I tell myself too many times
Why don't you ever learn to keep your big mouth shut
That's why it hurts so bad to hear the words
That keep on falling from your mouth
Do you know how I feel?
'Cause I don't think you know how I feel
I don't think you know what I feel
I don't think you know what I feel
You don't know what I feel