Chain Reaction

Just a poem on the effects a single person can have on another. Reviews appreciated!!!

I smile 'coz I'm happy;
I'm really at my best.
And my heart is just a swellin'
Right up against my chest.

I'm happy 'coz I see you;
You're just right in front of me.
And I must say there is nowhere
I would rather you would be.

I see you so I smile;
Can't do one without the other.
And they're all I need to make my day
So much greater than another.