Individual behavior affects and is affected by other people. The aim of this study was to examine if emotional distress in patients with atrial fibrillation (AF) and their spouses was associated with their own and their partner’s perceived health. Participants included 91 dyads of patients and their spouses. Emotional distress was measured using the Hospital Anxiety and Depression Scale and perceived health was measured with the Short Form 36 Health Survey. The Actor–Partner Interdependence Model was used for dyad-level analyses of associations, using structural equation modeling. Higher levels of anxiety and depression were associated with lower levels of perceived health in patients and spouses. Higher levels of depression in patients were associated with lower levels of vitality in spouses and vice versa. As AF patients and their spouses influence each other, health-care interventions should consider the dyad to address dyadic dynamics. This may benefit the health of the individual patient and of the couple.