Why would a wife want to watch her husband make love to another woman?

I like watching my wife getting pleasure from another man because he is enjoying something that i have, that i get sleep with at will. It is a great turn on for me and her, and she never has to do it behind my back because she can do when ever she wants with me there. It is a way of relieving the boredom that comes with years of marriage. It only works with a strong marriage and someone you can trust completely. Once you have set guide lines with the other man that what ever she decides is the way it will be. If you don't trust your wife, don't try it. Its all about trust, but so is a lasting marriage. Its a way of giving your wife ultimate sexual pleasure.