it is a very serious issue and one must understand its sensitivity........
Islam is the religion for all times and situations, it is a moderate and universal religion.....
In Quran v c many detailed ayats about this issue in very clear way....
Friendship between girl and a boy is clearly prohibited in QURAN.....it leads to many problems in future....friendship always tend to be LOVE from one side or other....and if family opposes then it will lead to many relations breakup!!!
we can observe it nowadays so called friendships have demerits more than merits. this is "shitaan" who inculcate such feelings in our mind and we think that v r taking right decisions.
Datz y in Islam "Nikkah" is emphasized that if u find a good partner, u must go for nikkah. if not then "ROoza"(fasting) is the solution to av0id urself from sins.