Mirror lyrics

I just don't understand this
Is this what I really see?
I mean, it seems unlikely
But I think I'm seeing
What I don't wanna see
I can't believe it
What have I done?
I'd love to think that
This all in my head
But this looks so real

Cause when I'm looking in the mirror
I see somebody that is not me
I don't know how to explain this
I don't know how it all happened
It doesn't seem to be my imagination
Not sure if I'm going crazy
But when I look in the mirror
I see someone that's not me
Me, me

It shocked when I first saw it
I had almost fainted to the ground
This person in the mirror
Copies everything I do
But I don't understand
I don't know who this person is
It doesn't look like me
Or maybe it does
I really can't explain it
At all!

Cause when I'm looking in the mirror
I see somebody that is not me
I don't know how to explain this
I don't know how it all happened
It doesn't seem to be my imagination
Not sure if I'm going crazy
But when I look in the mirror
I see someone that's not me

Now I look in the others
I see the same image
It was a big surprise to me
I guess the person in the mirror
Is me! Oh, is me!
I can't believe how I changed
I'm not sure if I did this to myself
But I guess I'll have to accept it
Cause that's just who I am
Mmmm... yeah...

Cause when I'm looking in the mirror
I see somebody that is not me
I don't know how to explain this
I don't know how it all happened
It doesn't seem to be my imagination
Not sure if I'm going crazy
But when I look in the mirror
I see someone
I see someone that's not me
Oooh ooh
But it is...