Compared to her... What am I?

I love the way you look into my eyes
Your smile lights up my day
I'm never blue when I'm around you
You make me smile when I'm down

But I'm not the one you love
For she is like a rose
So beautiful so wonderful
I'm just a piece of putty in her world

She lights up the darkness
Like a candle in the night
She is the fireworks on 4th of July
I feel so sad because you love her with all your might

Though i know all of this
I still love you
My passion is as bright as the sun
And as strong as the sea