Controversial opinion: The concept of a 'date' is an american romantic film import for a lot of other cultures. If I go back 10 years in my home country any woman would shut down your conversation if you asked her on a _one-on-one_ 'date', the implication alone would question her 'virtue'/intentions. One-on-one interaction would naturally occur as the casual hanging out with shared groups of friends or parties. I hon…
Similarly there is no such thing as a man and a woman casually going out for tea (coffee is very fancy lol) as "friends". If you did that, people would simply assume you are a couple. Platonic relationships would only manifest itself in groups and never in a one-on-one setting. Solo activities are rare over there anyway..
Regarding marriage, _both_ families have to meet and approve (once the couple decided they want to get married) and there is custom that the man, along with his family, visit the bride's and ask for "permission". This could only happen if she had initially said yes privately; You can't just show up and have the family force her into a marriage for example.
As you can see, it is very different culturally.. though many western elements are trickling down to younger generation so these days there is kind of weird blend..
Incidentally, when I met my fiance (she is from Spain) in Canada, I did it the Iranian way.. went to her house with my parents and asked her family if they would permit me to marry her. Even though she had assured me it doesn't matter, I insisted that it was important for me to ask for her father's blessings, which of course he very much appreciated! He also loved the fact that I had converted to Catholicism so we arranged a traditional marriage in a Church along with a nice mix of Persian/Spanish celebration thereafter.