Guided by media multiplexity theory (MMT), this article reports results of an experimental study examining how participants say they would respond to hypothetical changes in media use (i.e. increasing or decreasing use frequency) by an extended family member. After contending that MMT addresses both media use patterns and expectations, we employed expectancy violations theory (EVT) to consider the extent to which communication satisfaction (CS) and tie strength moderate evaluations of media use violations. Results supported MMT’s prediction that tie strength would moderate the extent to which the violation was perceived as important, whereas, following EVT, CS with the relative moderated perception of the violation’s valence. Beyond highlighting possible outcomes of media use violations, these results commend the nature of the relationship as a motivating force for media selection in interpersonal contexts.