How about this idea or plan make a plan for her to meet this by chance but have the room booked and secret camera hid in the closet or in the ceiling to record the sound and video. Then once she is recorded being real slutty and nasty with this guy you set up to be the one. You might could surprise her and have come over to repair some stuff while you have left and then come back and maybe hide and peek and watch or just rush back and join . She would be quite surprised then her husband would know 100% just how slutty his wife truly is.My first wife who had been with dozens of guys was quiet and shy too