Cuckolding tends to become the centerpiece of a couple's sexuality. It is the practice of it as a lifestyle that makes other fantasies much more intense. Exhibitionism, voyeurism, bondage, D/s, cbt, femdom - you name it: all become 5x as intense when experienced as part of a cuckolding marriage. Those same fantasies also serve as gateways to cuckolding by opening the door to exploring sexuality together.