love and life

Some time we experience that people around us claims that thay are in love,every prson has unique feeling about love ,it does not matter it is an old or young.Some time girls love with boys and boys with girls ,some time old person love with young one .This thing shows that love has no restriction of age limit,there is one thing is one thing is common which we can feel and you may experience that when some one is in love there is a great change in his life .Question arises here is this that why he or she change .i think that this is due to nature because every person and human being is based on natural phenomeena.
when some one obey the rules of reality and nature it feels a relaxtion in his life,it feels that every thing is loving with him for that reason there is a change in behaviour.