Mutual trust and love keep their relationship intact and sublime. Horse races allowed. But there is no betting. It is merely a pastime and is, therefore, encouraged. What is very significant is that alcoholic drinks are totally prohibited in practice.
Prostitution is also absent.
It goes to the credit of Iran that the implementation of law is honest and rich are not allowed to indulge in the vices. Though Islam permits plural marriages by a man subject to certain conditions, men in Iran do not take in general more than one wife. Monogamy is respected and expected by the society. If a man has to take a second wife for certain reasons, the consent of the first wife is compulsory and no excuses are heard. Violation may take the erring husband to the family court and he is all likely to be punished.