i have read the posts and i have come to the conclusion that we are trying to replicate Islamic teachings of Islam for an islamic society to Pakistani society.
You have my word:Pakistani society is not an islamic society.
You people are looking at the issue from your own perspective.This is ethnocentrism guys.You think that friendship between men and women always produces something bad.There doesn't exists a causal relationship between friendship of opposite sexes and evil.According to the unique set of your social values,norms and traditions,you people think that friendship is bound to create problems.Yes it does if your moral compass has been calibrated or programmed in a way that considers friendship pernicious.But what about a social class who doesn't share your values.There are many subcultures in Pakistani cultures.I studied in co-education and i haven't had any such problem of thinking of friendship or going beyond what was i told or i had been socialised.(though i do wish i had befriended katrina kaif)
And i don't want to hear about these islamic sanctions.The social apparatus makes things acceptable or unacceptable for us.Every society tries to develop certain tolerances for some aberrations existing in its culture.And in every society there exists a sanction for an act.for example consider this. Pakistani society is littered with banking system which according to our religion is haram.There is no second opinion that all banking is based on "interest".So,the hypocritic pakistani society has approval of interest based banking because it is need of the hour.Muslims have no alternative way to do business.And bank does its business through interest.People belonging to all classes participate in banks at all levels.What don't have an independent economic systen of their own.Consider the west.They have their own social,political and economic order.Pakistan does not have its own social order.Suffice it to say that all depends on whether the societ has developed some tolerance for any relations outside marriage or not.
We should also consider the avenues that are available today for girls and boys to talk to each other.The days of "kabootar ga ga" are over.There are mobiles,emails,facebooks,resturants etc.there is no way that you can stop them unless you l;ive in woods(Pakistan is in woods:no doubt about it).Isn't it high time that we stop radicalising this issue and permit humans to understand each other.Yesterday,i was watching a documentary on how monkeys chose their spouse and their social life.I was taken aback by the similarities between the process of males trying to win over females and the family heads trying to avert the platonic relationships.We are also social animals.we should also take into considerations the latest trends in our society and provide different avenues for them to cooperate and have a good understanding with each other.
Friendship of girl and boy should also be looked at from the changed perspective that exists today.During the period of our Holy Prophet(PBUH) islam and society was simple.At that time marriage was easy.Consider today's situation.just for the sake of argument we assume that friendship between boy and girl always leads to evil.Marriage today is 1000 times expensive than illicit relations.During the glorious days of our Holy Prophet(PBUH) marriage was much cheaper than adultery.
Islam is not applicable to Pakistani society.i am not an advocate of friendship but i am trying to put things objectively.I have seen that many girls were never approached by boys in university.Many selected the worst kinds of boys.We often used to wonder what is wanting in our personality that she didn't ask us.I also encountered jialas who posed as decent boys but in the end went for the most cunning girls.The point is that for every class there exists a gutter where a person will vent his frustration.Some good girls end up with the worst kind of boys vise versa.

I believe that boys and girls should talk to each other.We should talk so that we can dispel the curiosity and charm of the unseen.Family should know of this as it does in case of boys talking to boys.You can talk in college,school or university.Nothing is wrong with that.But,the hindi or american version is rejected because that is not a reality.Very often we try to re-enact many dramatic scenes which we have seen on movies.Even in usa girls are as conservative when approached as can be a pakistani girl.
And on the matter of a man hearing about his wife's boyfriend,i would say,that is also tolerated.It all depends on your socialisation.There is great diversity in society.Why do you ignore the fact that there are many westernised families in our society.There is the low social class where hunger of all sorts dominates human actions and people are like animals.With our socialistaion comes our insecurities.With each type of socialisation is attached some insecurities.some people may feel that talking to a boy or girl will make you compromise your sudies,make you fall in love after 3 months and all this junk stuff.This is never the matter.Boys and girls are not naieve.Our moral compass gives us the indication whether we are doing a rigt or wrong.The social pressure acts on all calsses and sub-cultures.A boy belonging to a low social class may be tempted to talk to a middle class girl but social pressure may never permit him to do so. Another simple example.It is very easy to get talking with a girl or boy by making him a brother or sister.Yes,it is also a new fashion in the market and then boys and girls keep assuring each other that though they chat/talk for hours they are brothers and sisters.the communicating parties will never have a brazen thought in their mind.isn't it a dichotomy?
Of course,those who want to make Pakistni society an islamic society should definitely say that girl-boy friendship is not islamic and it is bound to create problems.
@Invincible
The saudi model of keeping men and women away from each other has proven disastrous.You people can't even imagine the frustration that exists there.Rules don't permit me otherwise it would be a harrowing account.Just to give you hint.During hajj professional prostitutes go to makkah.Ohh Allah forgive us.Ameen.Pakistan is far better in spite of the violence against women.This violence against women such as molestation,physical,psychological and mental abuse at home and work-place is also a creation of pakistani society.In pakistani society social norms are trying to do the work of religion.However,it should be that islamic underpinnings should lead to the formation of social order and societal norms and values.

A personal note.
i remember that during my university years my mother wrote a letter to me stating that she doesn't approve of my talking to girls on mobile after university hours.I was in hostel then.I immediately stopped it.She told me there was no wrong if she was a colleague and we talked during university.but,warned me not to extend the realtionship after campus is off.I heeded her admonish.
You are more than welcome to disagree and register your dissension.

Thank you.