Now I Don't Know

There was a time when you'd say
What's on your mind
But lately I've noticed
You're just not that kind
And now for no reason
You're being strange and making plans to change
I thought I knew you
But now I don't know
But now I don't know

We were so different
We were so new
But now it's all changing
And I'm gonna lose
You say what's the matter
And I feel a fool for staying here like I am
I thought I knew you
But now I don't know
But now I don't know