The three of us are close friends and classmates at ● School. My girlfriend, and Mitsuki, my ex-girlfriend. Mitsuki is married, and we are living together. Occasionally, we would gather like this and enjoy a meal. However, everything changed today. Drunk Mitsuki leaned her body over and kissed me. During the two nights and three days when my girlfriend was away on a trip, we had sex countless times.