In October, my wife was shopping at a mall gift shop when a former co-worker walked up alongside her. When working together, they had become good friends and often had lunch together at a downstairs restaurant in the office building. He said they should keep in touch and swapped phone numbers. She asked me that night what I thought about that. I asked if she wanted to fuck him. She grinned and said, "I wouldn't mind. I really like him." I told her I thought that would be really hot. She phoned almost immediately and invited him to have dinner with us that weekend. I told her that I would stay that night in a hotel. She phoned him back the night before and said I was unexpectedly called out of town that night but said it would be okay for him to come over anyway. He wasn't at our home more than a half hour before they were naked and entering our bedroom. She had phoned me just a minute or so before and left her cell phone on alongside our bed. I listened as they fucked for about a half hour before the phone went dead. She hadn't recharged it, but I thoroughly enjoyed listening as long as it was working. She phoned me just after he left around 2 a.m. and told me I could come home. We had wild sex. She has been with him four times since and anticipates seeing him again within the month. He has no idea that I know about this. He wants to see her more often, but her excuse is that it can only be when I'm "out of town." Both are highly charged over completing this phase of their friendship. He has told her he had been wanting to fuck her since they had first become good friends. She responded that she probably would have been fucking when they worked together if he had then told her that. She loves getting dicked by her good friend. Each night they plan to get together, she is so excited she can barely contain herself. I love hearing the details of each encounter the next evening while we're having sex.