GBSA-060 The husband's bizarre hobby is watching his wife fuck each other with someone else

"If we continue like this, we will lose interest in each other like other opposite-sex individuals." Meeting and marrying as an undergrad alumni and a senior student. My wife has only experienced men with her husband, and she has tried to watch adult videos as a couple due to the lack of sexual variations, but for the past 5 years, she has not had sex. During that time, at work, I decided to draw male and female bodies using my wife and my male students as models. Seeing my wife shy in front of many people's gazes aroused me, and I could not contain the fantasy of my wife being embraced by another man.