Is that me or it is you?

When I am upset, there is a tear in your eye
When I am happy, there is a smile on your face
I am not sure who resides in me
Is that me or it is you?

You have sleepless nights when I work till late
You too stay hungry when I m not in a mood to eat
You get worried when I get hurt
You look fresh when I sleep for long
I am not sure who takes care of me
Is that me or it is you?

Sadness touches your heart before it comes to me
Happiness brings twinkle in your eyes
before it brings smile on my face
Words come out of your mouth before thoughts enter my mind
I am not sure who has my heart
Is that me or it is you?

I was upset and was crying
Wanted to spend some time with me
But I missed you when I was with myself
I am not sure who do I wanted
Was that me or it was you?

I have asked a thousand times to me
Who is my life?
Is that me or it is you?
I get no answer :)