Author's Note: The post below is the condensed, smart phone friendly version of the full length article Seven Keys to Long-Term Relationship Success . Most of us want to meet and settle down with the "right" person, and most of us want such a relationship to last.
Mr. Dunbar told him that social networks resemble a set of concentric circles: 150 people constitute the outer boundary of friends, 50 is the limit for trusted friends, 15 for good friends, and 5 for best friends.