Husband and wife slave, which is a common term in SM novels, is rarely seen in the real SM world. However, I am very lucky to get to know a couple who have such a tendency recently, and have experienced the process of playing SM with real couples. I would like to briefly write about the process and share the experience with you. Nowadays, the topic of online couple exchange and 3P is very hot. There are many people who like to have sex with their wives or watch their wives have sex with others. I have contacted such netizens before and have played 3P with husband and wife But at most, they were sex in special ways, and there was no SM plot. However, the experience of playing 3P with other couples was also very helpful to this training of husband and wife slaves, because the partner recognized my previous practical experience and further contacted me.