- Patients diagnosed with localized prostate cancer who are about to receive definitive treatment with either radiation with or without ADT (androgen deprivation therapy) or prostatectomy AND who also have a spouse or been in a committed relationship with their partner for at least 6 months who is willing to participate in the study. Both parties are required to sign an informed consent, able to speak or read English, have reliable internet access,have their own e-mail address, or be willing to sign up for a new one, and must be 18 years of age or older. The participants must be consented at least two weeks prior to the start of treatment, so that participants will have enough time to complete a baseline survey and access the first module of the intervention.