What is it?

You make my heart beat
You make me cry when you say you love me
what is it about you?

Why do you love me so?
What makes you love me?

I thought I would be alone
Forever, but then you came along

What makes me
Want to die for you
Want to live for you?

What makes me
Laugh when you say nothing funny?
Makes me jump for joy when you say I love you?

What is it about you?