"I'm Motivated By The Lack Of Doubt..."

I'm in love with a guy. Though he doesn't know it or anything, he's the one I want to marry. He's perfect. Everything about him is flawless. I've loved him since the first time I met him and I can still remember every little thing that I learned about him that made him even better in my eyes. I don't really know how to explain it or even figure out what the hell I can do about it... But I love him. How do you tell someone who doesn't know?