The aftershocks of infidelity: a review of infidelity-based attachment trauma

Abstract

The existing literature indicates that sexual and emotional infidelities are common in adult romantic relationships. Additionally, research suggests that such infidelity is highly detrimental to relationship longevity and to the well-being of betrayed partners, with some authors characterizing it as a trauma and noting its potential to constitute an “attachment injury.” This literature review summarizes the existing research on how infidelity impacts romantic relationships and its emotional, cognitive, behavioral, and stress-related physical health consequences for betrayed partners, thereby providing greater specificity to the nature of this trauma or attachment injury. The integration of the findings discussed herein suggests that infidelity-based attachment trauma manifestations may resemble disorganized attachment behavior. The implications for clinical practice are discussed. Based on these consequences, we evaluate the common “adjustment disorder” diagnosis for infidelity-based attachment trauma and suggest a refined diagnostic sub-categorization for cases with traumatic symptomatology. Finally, we provide recommendations for future research.

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