We have been married now for almost 20 years, and it's true to say that my wife has maintained her healthy appetite for sex. She is now in her early forties, and has maintained her figure. She is about 5 foot 4 inches tall, blonde hair with well above average boobs. For the past 2 years or so, she has been going into town on a Friday night with my sister and her friends, while I have been looking after our two children. I...