I thought that I knew you.
Guess I was wrong.
I thought that you was interested in me.
I was wrong.
I thought that you liked me, that you loved me.
I was wrong, again.
I thought that you told your friends about me.
Nope, they first asked about me and then you said: "Good, I think.".
And even when I broke up with you, I had to tell that to your best friend.
I thought I knew you.
My friends thought that they knew you.
Your friends thought that they knew you.
But we were all wrong.