How can we miss our love so much? How... ABEL ALBERTO"FERRO QUENTE"

How can we miss our love so much? How can such an abstract thing as love absorb the thoughts of someone as rational? Why is love such a powerful feeling? Why do we need to see your love and to be with her/his often?
Do people become crazy when they're are loving?
Believe, there isn't any answer to all of this questions.