This study examines the association between parental relationship churning (i.e., the separation and reunification of one's biological parents) and adolescent well-being. Research examines how instability in parental romantic relationships is linked to adolescent well-being, but it has largely neglected instability and transitions that occur within, rather than between, relationships. Family stress and family boundary ambiguity theories suggest that adolescents from churning families will experience deleterious outcomes when compared with their counterparts in stably together families.