Are you currently married or have you been in a relationship for at least two years? Participate in a paid research study at the University of Colorado. Couples will be paid $12/hr each to complete a mild heat pain task and questionnaires about their relationship and health. Some couples will also be asked to participate in an MRI scan. Each partner will be paid $24/hr for the MRI portion. To enroll, please click the following link: https://redcap.ucdenver.edu/surveys/?s=8SLuPQy4ty