This story happened a few years ago now. It involved my wife Angie, who at 40 had retained her figure and her looks, thanks to regular sessions at the pool and gym. She was (and still is) a very respectable size 12, with 36C breasts, natural blonde and the most stunning blue 'come to bed eyes'. I have been aware of her flirting with other men for several years now and have come to tolerate her advances at various parties. The first I knew of anything beyond her fairly harmless flirting was when I went to look for her at a family party. My search took me to the car park where I discovered her kissing a guy who I had never met before. The feelings of jealousy were fighting with, and losing to a stronger feeling of lust, reinforced by my rapidly growing erection. I positioned myself behind a conifer hedge as I decided what to do. I couldn't hear any conversation but it was clear that my wife was not taking a passive role. Angie was pulling him tight against her as they engaged in a passionate embrace I will continue....