Sometimes when you meet someone you just click. I'm not sure I believe in love at first sight, but I sure believe in the click. I don't think the click always mean the one you love, but maybe the best friend you ever had.
Heart creates enough energy to drive a truck 20 miles - or to the moon and back in one lifetime. So when you tell someone you love them to the moon and back, you're telling them you love them with all the blood your heart pumps your whole life.