Device-To-Device (D2D) multicast communication is emerging as a practical solution for alleviating severe capacity crunch in data-centric wireless networks and encourage backhaul-free communication directly among devices with similar content requirement. To exploit D2D communication for achieving higher throughput, less delay and efficient spectrum usage, a careful resource allocation is required. In this study, we analyze the resource sharing between cellular users (CUs) and D2D users when one or more than one D2D multicast groups share the resources with a CU, with the objective of maximizing the system throughput and spectrum efficiency, while guaranteeing a certain level of quality of service to CUs and D2D users.