For me a friendship between man and woman should only be at work place and not outside, discussion about work yes and not about personal life, this is from the Islamic point of view.
Come on guys please think what are the steps which makes man get attracted to woman and vice versa?
I would say as follow:
1st a look or a gaze
2nd a smile
3rd a short talk
4th a date
My advice for those muslims who do not respect them selves please be careful and remember when you cheat your supposee (wife/husband) same thing will happen tomorrow for you supposee.
For a relaxed life for you brothers stick to your values (for muslim brothers).