• Change in Self-Reported Partner Sexual Function [ Time Frame: Baseline up to eight months ]
  Partners' (male) self-reported sexual function will be measured using the 15-item International Index of Erectile Function (IIEF). Total scale scores range from 1 to 75, with higher scores indicating a higher level of sexual functioning. Change in mean male partner IIEF score over time will be reported. Positive mean change scores indicate increase in sexual functioning. If female, partners' self-reported sexual function will be measured using the 19-item Female Sexual Function Index (FSFI).Total scale scores range from 2 to 36, with higher scores indicating higher functioning. Mean change scores will be reported: positive mean change scores indicate increase in sexual functioning over time while negative mean change scores indicate decrease in sexual functioning over time. These data will be analyzed separately from patients because the partners have not been diagnosed with breast cancer.
• Change in Self-Reported Patient Sexual Distress [ Time Frame: Baseline up to eight months ]
  Patient sexual distress will be measured using the 13-item Female Sexual Distress Scale-Revised (FSDS-R). Total scale scores range from 0 to 52. Higher scores indicate higher levels of sexual distress. Change in patient mean sexual distress score over time will be reported. Negative mean change scores indicate decrease in sexual distress.
• Change in Patients' Self-Reported Relationship Intimacy [ Time Frame: Baseline up to eight months ]
  Patient self-reported relationship intimacy will be measured using the 17-item Miller Social Intimacy Scale (MSIS). This scale assesses emotional intimacy, closeness and trust toward an individual's partner. Scores range from 17 to 170, with higher scores indicating higher levels of intimacy. Change in patient mean relationship intimacy score over time will be reported. Positive mean change scores indicate increase in relationship intimacy.
• Change in Partners' Self-Reported Relationship Intimacy [ Time Frame: Baseline up to eight months ]
  Partner self-reported relationship intimacy will be measured using the 17-item Miller Social Intimacy Scale (MSIS). This scale assesses emotional intimacy, closeness and trust toward an individual's partner. Scores range from 17 to 170, with higher scores indicating higher levels of intimacy. Change in patient mean relationship intimacy score over time will be reported. Positive mean change scores indicate increase in relationship intimacy.
• Change in Patients' Self-Reported Relationship Quality [ Time Frame: Baseline up to eight months ]
  Patient self-reported relationship quality will be measured using the 7-item Dyadic Adjustment Scale (DAS-7). Total scale scores range from 0 to 36. Higher scores indicate higher relationship quality. Change in mean relationship quality score over time will be reported. Positive mean change scores indicate increase in relationship quality.
• Change in Partners' Self-Reported Relationship Quality [ Time Frame: Baseline up to eight months ]
  Partner self-reported relationship quality will be measured using the 7-item Dyadic Adjustment Scale (DAS-7). Total scale scores range from 0 to 36. Higher scores indicate higher relationship quality. Change in mean relationship quality score over time will be reported. Positive mean change scores indicate increase in relationship quality.
• Change in Patients' Self-Reported Anxiety [ Time Frame: Baseline up to eight months ]
  Patients' self-reported anxiety will be measured using the 7-item Generalized Anxiety Disorder scale (GAD-7). Total scale scores range from 0 to 21. Higher scores indicate higher levels of anxiety. Change in mean anxiety score over time will be reported. Negative mean change scores indicate decrease in anxiety.
• Change in Partners' Self-Reported Anxiety [ Time Frame: Baseline up to eight months ]
  Partners' self-reported anxiety will be measured using the 7-item Generalized Anxiety Disorder scale (GAD-7). Total scale scores range from 0 to 21. Higher scores indicate higher levels of anxiety. Change in mean anxiety score over time will be reported. Negative mean change scores indicate decrease in anxiety.
• Change in Patients' Self-Reported Depressive Symptoms [ Time Frame: Baseline up to eight months ]
  Patients' self-reported depression will be measured using the 9-item Patient Health Questionnaire (PHQ-9). Total scale scores range from 0 to 27. Higher scores indicate higher levels of depression. Change in mean depression score over time will be reported. Negative mean change scores indicate decrease in depression.
• Change in Partners' Self-Reported Depressive Symptoms [ Time Frame: Baseline up to eight months ]
  Partners' self-reported depression will be measured using the 9-item Patient Health Questionnaire (PHQ-9). Total scale scores range from 0 to 27. Higher scores indicate higher levels of depression. Change in mean depression score over time will be reported. Negative mean change scores indicate decrease in depression.

Over half of breast cancer survivors experience sexual concerns resulting from physical changes due to breast surgery, chemotherapy, and hormonal therapies; emotional changes; and relationship difficulties. In contrast with many aspects of quality of life (QOL) that tend to improve over time for breast cancer survivors, sexual concerns often persist for years. As a result, many breast cancer survivors and their partners may wish to resume a satisfying intimate relationship after treatment ends but encounter difficulties in doing so. Sexual concerns often go unaddressed, can lead to clinically significant psychological distress, and have a negative impact on survivors' relationships and quality of life. Thus, addressing sexual concerns and improving sexual function is of critical importance to the long-term adjustment of these survivors. Given the central role of the intimate relationship in breast cancer survivors' sexual experiences, a couple-based intervention that systematically involves the partner may be a highly effective approach for addressing these concerns and improving function. Yet randomized controlled trials evaluating the efficacy of a couple-based intervention targeting sexual function for breast cancer survivors are lacking. In this study, the investigators plan to evaluate a four-session telephone couple-based intervention that provides education and training in cognitive and behavioral skills to help couples cope with sexual concerns and enhance their intimate relationship, called Intimacy Enhancement (IE).

The specific aims of this study are (1) to evaluate whether the IE intervention will lead to a significantly greater increase in patient sexual function from pre-treatment to post-treatment and 3- and 6-month follow-ups compared to the LHT condition; (2) to evaluate whether the IE intervention will lead to significantly greater improvements in partner sexual function, patient sexual distress, patient/partner relationship intimacy/quality, and psychological distress from pre-treatment to post-treatment and at 3- and 6-month follow-ups, compared to the LHT condition; (3) to evaluate whether increases from pre- to post-treatment in patient sexual communication and self-efficacy for coping with sexual concerns mediate the beneficial effects of the IE intervention on patient sexual function at 3- and 6-month follow-ups.

• Behavioral: Intimacy Enhancement
  The IE intervention is grounded in cognitive behavioral couple therapy and sex therapy, and includes education and skills training with a focus on the following major topics: understanding effects of breast cancer on sex and intimacy; goal-setting; communication skills; problem-solving and engaging in activities to build intimacy; identifying and restructuring negative or inflexible thoughts; and planning ahead and preparing for challenges. Participants will be asked to participate in written and behavioral activities at home between sessions to strengthen skills acquisition.
• Behavioral: Living Healthy Together
  The Living Healthy Together (LHT) intervention focuses on delivering education and support to breast cancer survivors and their partners across a range of topics including social support, sleep and fatigue, stress and stress management, nutrition, and physical activity. Participants will be asked to engage actively with the material and to review readings and intervention material between sessions.

• Experimental: Intimacy Enhancement
  Participants attend four sessions (60-75 minutes) consisting of education and skills training to enhance physical and emotional intimacy.
  Intervention: Behavioral: Intimacy Enhancement
• Active Comparator: Living Healthy Together
  Participants attend four sessions (60-75 minutes) consisting of information and support across a range of breast cancer-related topics.
  Intervention: Behavioral: Living Healthy Together

Inclusion Criteria:

• Patient is female
• Patient age 18 years or older
• Patient has a medically confirmed diagnosis of non-recurrent breast cancer (Stages T1-T4, N0-N1, M0)
• Patient completed active treatment (e.g., chemotherapy, radiation therapy, surgery, immunotherapy) 6 months-5 years ago (current use of endocrine therapy is acceptable)
• Patient is currently in a partnered relationship that could involve sexual activity
• Partner or spouse is 18 years or older
• Patient lives with a romantic partner for at least 6 months
• Patient has a score of at least 3 on Patient Care Monitor Sexual Concerns screening item

Exclusion Criteria:

• Patient or partner is not able to speak and read English, as stated in medical record, as observed by study team member or in self-report
• Patient or partner ECOG Performance score > 2 OR medically unable to participate as judged by physician/in medical record or by self-report
• Patient or partner has a hearing impairment
• Patient and partner do not have reliable telephone access
• Patient has overt cognitive dysfunction or psychiatric disturbance such as suicidal ideation or severe mental illness, as observed or judged by the researcher, physician or referring source, or self-report
• Patient past or current history of any cancer other than non-melanoma skin cancer, including prior breast cancer
• Patient is currently participating in couple/marital therapy
• Patient is currently pregnant