There are diverse hypothesis and theories about “love”.According to these experients and surveys,in love with a person is not only about emotion or feelings ,but also about chemicals and hormone.Besides,making an effert to maintain the relationships is also important.This article broaden my horizons.In my mind,love is to people what water is to fish.Everyone needs family,friends,even lover.All the relationships connect with love.Surprisingly,love can also be explained as chemical reactions.