Taylor Swift- Forever and Always

"Was I out of line? Did I say something way too honest
That made you run and hide like a scared little boy?
I looked into your eyes, thought I knew you for a minute
Now I'm not so sure

So here's to everything, coming down to nothing
Here's to silence that cuts me to the core
Where is this going? Thought I knew for a minute
But I don't anymore

And I stare at the phone and he still hasn't called
And then you feel so low, you can't feel nothin' at all
And you flashback to when he said forever and always"

I don't understand...