Reflection (Christina Aguilera)

Look at me
You may think you see who I really am
But you'll never know me
Every day, is as if I play apart
Now I see
If I wear a mask
I can fool the world
But I can not fool my heart 
Who is that girl I see
Staring straight back at me?
Why is my reflection someone I don't know?
Must I pretend that I'm
Someone else for all time?
When will my reflection show
Who I am inside? 
There's a heart that must be free to fly
That burns with a need to know the reason why 
Why must we all conceal
What we think
How we feel
When will my reflection show
Who I am inside? 
Who I am inside?