The study examines 160 parent-teen dyads who participated in a pilot trial intervention designed to provide parents with information and advice about teen alcohol use. The study investigates the differences in an online intervention app’s usability and interest, parental communication, teen drinking frequency, teens’ consequences from drinking, and parental permissiveness towards drinking between married (n=126) and unmarried (n=34) parents. Results indicate that children of unmarried parents experienced significantly greater consequences from drinking.