After the Divorce, I Became the Stepfather of My Mistress

On the day I divorced my ex-wife, she and her mistress made fun of me in front of the Civil Affairs Bureau. But I held the hand of the woman next to me and went to the Civil Affairs Bureau to get a marriage certificate. The mistress looked at the woman next to me and asked, "Mom, why are you here?" But she held my hand and said, "Come, son. Let me introduce to you, this is your... Stepdad."