An NTR desire that cannot be told to others. To experience the excitement that can only be felt by watching his beloved wife being held by another man, he lets someone else steal her away. He is desperately excited to see his wife, who hasn't touched another man in years, immersing herself in sex while her husband is right by her side! And the wife, who initially felt guilt, is swallowed by pleasure and begins to swing her hips on her own.
