HEZ-793 Wife-swapping. My wife and my colleague disappear into the bedroom... A few minutes later, I hear my wife's moans... ~Couples who have crossed the line~ Episode 2

A few years into marriage, our married life was smooth. However, sex had become routine and conversations at home were dwindling. Around that time, a colleague who shared similar troubles invited me to his home. On the day I was invited, we drank quite a bit, and as the party wound down, my colleague proposed a wife-swapping arrangement. Everyone hesitated but ultimately agreed. My colleague and my wife disappeared into the bedroom. Soon after, moans from my wife could be heard from the bedroom… This excited me, and in front of me was my colleague's wife…