The role of managing information about infidelity and differentiation of self in the adaptation of spouses after infidelity

Infidelity in marriage leaves a lasting mark not only on the relationship between two people but also affects the functioning of the entire family system. In psychological analyses, research on infidelity is dominated by approaches focusing on its negative consequences. These include, among others, the dissolution of the relationship, increased symptoms of depression, lowered self-esteem, and the emergence of Post-Traumatic Stress Disorder (PTSD) symptoms. Practical aspects are characteristic of studies where authors emphasize behaviours aimed at preventing infidelity in relationships. Relatively few publications are dedicated to identifying and discussing the psychological variables that may support adaptation after experiencing infidelity in a romantic relationship. The main goal of this article is to propose a new model of adaptation for couples after infidelity in marriage, based on the assumptions of systemic family theory. The specific aim is to present the results of research from the last decade that relate to the variables proposed in the model, such as self-differentiation and managing information about infidelity.