Long term relationship

Good things last.
Four hundred years ago Dutch people started to settle in and around New York and all along the Hudson River. Through the ages, those Dutch families have become Americans. The Holland Society was founded by and for them.
These days, Dutch people are still living and working in the area. What’s so special about the American Dutch relationship?
Generations of Dutch immigrants have enriched the American history and culture with their unique customs and traditions and their leadership of international business.
The Dutch match with America. The relation is commemorated in Dutch – American Heritage Day.

What are your experiences with long term relationships?
What are the goods things about them that work for you?