Some of the latest research on successful marriages has direct implications for successful business partnerships. As he outlines in “The All-or-Nothing Marriage” and in his popular Ted Talk , Dr. Eli Finkel observes that over time, our expectations of marriage have evolved to place ever-greater demands on the marital relationship. This is due, in part, to the fact that our in-person (as opposed to online) social networks are shrinking, so we have fewer close relationships with friends, co-workers, neighbors and family members, and this can put additional pressure on marriage to fill a void of social connection. Satisfying these needs for connection can yield greater happiness, serenity and depth of inner life, but only when a couple is willing to make a substantial investment of time and energy into the quality of the relationship. If this shrinking social network places greater pressure on our intimate relationships, it stands to follow that our business partnerships may also feel the squeeze.