Draw a smiling face

Here i am
Now look what's become of us
With a million reasons i don't want to be here
Any longer than neccessary
No one told me it is easy
But i could not guess it is that hard
There'll be enough time to raise your eyebrows
There'll be enough time to forget
Here i am
Now run cause i had enough
With a perfect little smile
Drawn on your perfect little face
I won't understand it
No one told me it is easy
But i could not guess to play that part