This study is an empirical investigation of 35 clinically distressed therapy seeking couples receiving sequential sessions of both therapist-centered and, alternatively, couple- centered, enactment-based therapy processes. Using a mixed-level longitudinal analysis with a repeated measure design, analysis of secure attachment, and the interrelated dimensions of attachment anxiety and attachment avoidance were examined demonstrating that couple- centered, enactment-based sessions produced higher levels of post-session and within-session attachment gains than therapist-centered process for both males and females. Couple-centered, enactment-based process was observed to have a unique treatment effect after the second session, where both partners experienced higher levels of attachment followed by levels returning to pre-experiment levels. Clinical implications and future research considerations are suggested.