Conflict is ubiquitous in all relationships. The study of the causes and effects of interpersonal conflict has been extensive and notable. However, in recent decades there have been paradigm shifts moving away from focusing on illness and pathology to moving towards understanding positive functioning and well-being. Similarly, in the field of conflict studies, there has been an evolution in understanding not only how two parties or cultures resolve conflict that minimizes violence and destruction, but how those parties promote and lay the foundations for modes of peace. This study attempts to expand upon these latest developments in these disciplines by reconceptualizing and offering a new assessment for measuring positive relational functioning for couples. Using a modified Delphi method, I critically explore how seasoned family therapists and other mental health practitioners conceptualize the dynamics of positive relational functioning and peacebuilding in romantic committed relationships. Interventions are needed to increase the focus on positive relational functioning not only for individuals but for couples as well.