I feel it is almost impossible to define love. It is different for everyone. Webster's Dictionary defines love as "a deep and tender feeling of affection for or attachment or devotion to a person or persons" Clearly love can be thought of as an emotion but it can be thought of as many other things as well. There are actions characterized by love. Protecting someone, deep affection for, devotion and loyalty, and other forms of expression. Yet such actions can be labeled with other emotions, and not confined to just love.
             -Love can be instant or grow in time
             When you're in love, you become more concerned with that person's well-being than your own.
             When you're with a "loved-one," you feel self-confident, "complete," at peace and very secure with yourself.
             Maybe Love is like Life, undefinable. Although you can make a definition for life, you can't make a definition for everyone's life.
             ------------------------------------------------------------------------
             ...