We think about it, sing about it, dream about it and loose sleep worrying about it. When we dont know we have it, we search for it. When we discover it, we dont know what to do with it. When we have it we fear lossing it. It is the constant source of pleasure and pain. But we dont know which it will be from one moment to the next. It is a short word, easy to spell, difficult to define and impossible to live without.
They love each other so much, they can't live without each other.