But love is an uncontrollable and unconscious feeling of association with someone. When a man loves some one, he can not live with out him/her.
He starts to depend emotionally upon his/her lover and it is not in his/her control. A man can like one or more things and persons but love is only one. We can normally live without our liked things but it is difficult to live with out your love. There are not any defined criteria of love.
But these are not as hard and fast rules of life, because all the human beings are not same in their nature and ideas. There are so many people that have their life decision according to their logics and don't believe on emotions.