Why Say 'Goodbye'

We fell out the night before and I wished you away
Now you cry like we will never see each other again
Is it bad that i don't want to see your sad face
I fear the feeling of pretense in our emotions
I didn't know how much I hurt you
Or do I wanna know now
So is it bad that I didn't want to see you leave?
I wanted to wake from my sleep and find you gone
Then you ask me why I wasn't there to say bye
I am young and have no understanding of how I feel yet
So tell me how you feeling plain words so I understand
Don't tell me to go away when you want me near
Don't walk off in a hurry and look back
So tell me in plain words...
Why say 'goodbye' when we shall see each other again?
You'd be back and we'll wish we were far away!
And we will start from where we left off
We will see two different things in one sentence
Distance should do us good and make us one again
Or give us a break from what all of this
So tell me, who is hurting more?
The one going away to from all this..
Or the on left behind...where argued the night before...
So tell me, what does 'Goodbye' mean?