You don't know me anymore

You think you know me
But you don't
You think you love me
But you won't
You still call us friends
But yet I think no
You think we're the same
But you don't know
You think nothings changed
But nothing is the same
You think we need each other
But we're playing different games
You think that I might come back
But it's you that did go
You think that I will always be here
But I had left you long ago
You think that you're in my world
But I just stopped to say Hi
You think that I'd never let go
But I'm finally saying goodbye