Op I go want make you add Sexual intercourse. Impotency in most cases caused divorce and not conflict because they have already known that they can't produce and perform to one party satisfaction but whereby one of the couples refused to have sex with the huge party then midnight conflict would broke out instant. And when dey break if it is the woman refused for it then there would no money for her to cook and if it is man then no cooking that day. there the number 4. is  Sexual intercourse.