What is that love?

What is that love we feel, in a moment that makes us fall on our knees by a familiar face and in another moment it makes us feel our legs tremble front an unknown look? What is this feeling that tears us away on an alone and dark night, and that sometimes when we are together is our goal? What is this love that makes us dream of fantasies and throws us against reality when we realize our own illusion? What is this love that makes us through unknown paths in the name of a search that never ends? What is this love that sometimes forces us to settle the heart in a safe ground when our aspiration is to fly? What is this love so intense, deep and desperate that exists in infinite space and takes away our peace, and gives us in brief encounters for life the feeling of unutterable fulfillment? What is this love that forever searches, never finding a port of all their aspirations? What is this love that we read about, we see in the eyes of others and never get to live fully? What is this love that dominates the soul, which starts in a weeping sore and makes us find the courage to glue the pieces of our heart and move on after a disappointment?