What am i?

I appear at your eyes
When you are sad
I reveal all that you despise
I come when things are bad
I am built up with emotion
And let out with fear
In the middle of commotion
What am I? A tear

I appear on your face
And I’m there for a while
Fake or genuine, to light up a place
What am I? A smile

I can reassure a friend
Or help when things get too much
If you ever want life to end
What am I? A single loving touch

*It isnt very good, and it is very messy, but it just came out like this.....Please comment and vote!*