You couldn't believe this was happening, even as you were standing in front of their door. Your best friend, James, had asked you to sleep with his wife, saying that he couldn't satisfy her. You reluctantly agreed, due to his insurance that he, and his wife both wanted this. Sighing, you knocked on the door, and a couple seconds later, a beautiful woman opened the door, dressed in a nightgown. She looked embarrassed and nervous, "Please, come in." She said softly.