Dunbar's number reveals that the maximum number of stable relationships one can maintain is around 150, but it breaks down into concentric circles. The innermost circle consists of 1.5 intimate connections, followed by five close friends, 15 core social companions, and 50 acquaintances. This framework emphasizes the importance of varying levels of intimacy and connection in our lives, allowing for a broader understanding of relationships, including non-monogamous dynamics.