This trope applies to couples where both the man and the woman enjoy sex outside of marriage. In this trope male partners enjoy knowing their wives are having sex with others, wanting their women to be completely satisfied. Women may make their men watch them fuck better alpha men with much bigger cocks. There may be cheating roleplay, but these couples are fully secure in their relationship and their love and they both enjoy and get off on wife sharing. The men may want to watch their women get fucked by bigger dicks and the women what to indulge their desires with their male partner's approval.