so long as there is distinction between men and women ,the relationship between them will be an everlasting topic .Can there be authentic frendship between the sexes? this is a question that arouses people 's interest and meanwhile confuses them .C.S,Lews made four distinction of love .They are:affection,friendship ,eros,and charity.Lewis notes that it is rare when these come alone ,so in most case we should expect a mixture of them .Affection can be seen as the type of love a mother can feel for a son ,but also a son for a mother .It can be more general .It can be the love for an old employee or for a faithful pet .Friendship can be seen when people share common interests .The common interests draw a boundary between "us"(the friends) and "them"(the rest ).Eros is the love of couple .Charity is the type of love which is given without interest.It could be seen as "pure"gift_love .There is no doubt that men and women can love each other ,but can they become real friends?