Every single nation and culture has rules, laws, and standards. Sometimes those rules regard things like how someone should dress or worship, and such is the case in many Islamic countries. According to Newsweek, "Women in Iran may be forced to wear the hijab — a scarf covering their head," and the same goes for many other Islamic countries. Iran, too, is fairly modest when it comes to how men and women interact in public and how people flirt. In fact, it's all kinds of forbidden, per Newsweek. "As young Iranians strive for sartorial freedom — and fewer restrictions on the way they interact with the opposite sex — they can face fines, imprisonment, and torture," the publication reported. 

Because of those rules and laws, flirting in Iran and other Islamic countries is a lot more subtle than in other places. According to Newsweek, young people in Iran, specifically, have found that flirting in private is the best way to go about it. Additionally, many young women have started wearing more makeup and pushing back their hijabs to attract attention.