If you read my previous account of my wife Beryl\'s coupling with art class tutor Raymond, you will know that he is a randy sod, my wife (with my knowledge and approval) a willing victim....well, the private sitting thing became a regular feature....I usually accompanied her, partly because I felt I needed to protect my own interests, partly because I enjoyed the sensual scenarios that were played out..... One particular Thursday afternoon, I was late getting to Raymond\'s studio...letting myself in and going quietly into the tableau he used, I was amazed to see a young stud, his back glistening with sweat, pumping vigorously away....moving closer the scenario became clear.....my Beryl was riding Raymond for all she was worth, he laying on the chaise longue....the young lad (18?) was firmly embedded up her bum, shagging like there was no tomorrow!! I stood and watched...then at a signal I didn\'t see, they stopped, and changed positions.....the lad laid on the couch, B re-mounting his stiff cock, this time in her cunt, whilst Raymond, with some difficulty and a lot of KY lube, managed to get the first couple of inches of his large bulbous cock into her arse. The rest is predictable....B got noisy, suggesting another orgasm, the lad started his \'I\'m cumming\' procedure, and Raymond managed to get the rest of his thick 5\" right up B\'s bum, cumming quickly with the animal cry I had learned to expect. After the action had stopped, B (still not aware of my arrival) started gobbling the lad\'s cock wanking it furiously.....with the power of youth he came a second time within minutes, his thin spunk spraying over her face and hair. What a woman, what a guy! Well, that was it for that day...we acknowledged each other\'s presence, dressed quickly, and went our ways.....B confessed to me in the car home that she was really enjoying her new sexual freedom, and implored me to re-assert my conjugal rights when we got home...which I did, sloppy seconds and Raymond\'s thinning cum just leaking from B\'s bum as I shot my load.........this is great, suddenly infidelity is fun.....!!