Confused

What in the world was I thinking
To let you in like that?
I said it, and it was so convincing
I wouldn't make that mistake again

Sometimes I get the feeling you mean to
Be the first thing on my mind
But then I'm sitting right next to you
And you act like you've just gone blind

Why does it feel like a storm in the summer?
One day it's warm then, oh, here comes the thunder
I go back and forth and you just seem amused
I just don't know, you've got me so confused

What in the world were you thinking
When you smiled at me like that?
I swear you get my head spinning
But could you leave my heart intact?

Baby, I'm no mind reader
I'm no good at games either
So, please, just keep it simple