I had thought about having another guy join us for a while, but she was unsure about at it first. I think it was more of the stigma that goes with it, and of course finding the right guy. I knew she would not do with a stranger, but someone that we knew somewhat well I thought she might.
We had a friend that had moved away when he changed jobs, but he still came into our town for work. I kept in touch with him and I knew he liked her. I would make some sex comments occasionally and he always seemed interested and wanted more details. Well when he came in one time I suggested he stay at our house. She was ok with it so the next time he stayed with us a few days during the week. It gave us time to have some drinks on the porch in the evening once the kids were in bed. I also made sure he stayed in the spare bedroom that is right next to ours. The first trip was just that, us having dinner and then some drinks in the evening. I did flirt with her in the evening to gauge his interest to see how he reacted when I did and also to see how she did as well. I could tell he liked when I touched her and made comments and she was ok with it as well. When alone I even made comments to her asking what she thought of him, etc.