 This study seeks to enroll 76 couples in which one of the members is a combat-veteran with PTSD. Each couple will be randomized into one of two cognitive-behavioral therapies developed specifically as a treatment for PTSDeither Prolonged Exposure PE 1-4 or Cognitive-Behavioral Couples Therapy CBCT 5-7. Whereas, PE was developed as a one-on-one therapy that focuses on treating the individual, CBCT for PTSD incorporates the partners into therapy and seeks to directly address relationship functioning while treating the PTSD symptomatology. Both partners in each couple will complete a battery of several assessments measuring various aspects of psychological distress e.g., depression, PTSD and relationship functioning at five time-points throughout the study. But, only the partners assigned to the CBCT group will be involved in the actual therapy sessions. Analysis will be carried out to identify whether any significant differences exist between PE and CBCT in treating PTSD and improving relationship functioning. 