Deeply rooted relationships tolerate conflict more than superficial ones. [contrarian]
Thus, although conflict among intimates can have more tragic results than among less intimate persons, in the light of the circumstances discussed, precisely the most firmly grounded relation may take a chance at discord, whereas good and moral but less deeply rooted relationships apparently follow a much more harmonious and conflictless course.
Georg Simmel, on individuality and social…, loc. 319