What happend?

I don't understand
What happened to us
We were once friends
But you lost your trust

I said one thing stupid
But you said it too
I don't understand
Whats the matter with you

You rushed round that corner
Tears streaming down
You waltzed up to me
Your face in a frown

Screaming at me, turning blue
As you stormed away
It was to good to be true
From good to bad, in under a day