Barriers to sustaining friendships 1)Changes in lifestyle: If one friend has a child and a marriage and the other does not, the two may __________ relate to one another. 2)Geographic distance: Childhood friends often walk next door or hitch a ride from a parent to see one another. When time together requires a plane or long car ride, the friendship__________ nurture. 3)Cultural values surrounding friendship: In the U.S. and in many other countries, romantic relationships are treated as the primary and most important relationship. This can cause some people to __________ their friendships less as they enter adult romantic relationships. 4)Time __________: