My wife and my "other woman" who is very nearly her twin (I have a type) in a nude, dirty, nasty, fight to the finish over me. Naturally, I will be the only witness as they try desperately to destroy each other. The less violent version would be them battling sexually in our bed until one finally gives up and admits the other woman is her better.
I will never see either because there is no "other woman" and I have no intention of looking for one. It's a fantasy. In the real world my wife would definitely shoot me for putting her in that situation! 
Great post Ref! One that I can really relate to. I once told my wife that my ultimate fantasy would be to watch her wrestle her twin sister. She breathed a deep sigh relief knowing that this was impossible because she doesn't have a sister, let alone a twin. So she was entirely off the hook.
That was my ultimate fantasy, but not the only one. There was a woman in my major in college who could have passed for my wife's sister, or at least her cousin -- same coloring, about the same height and stature. Both were athletic and very competitive in an era that pre-dates Title IX. The thought of those two beauties actually engaging in a wrestling match still makes my head spin. It could never have happened then, but it's still fun to play the scenario in my mind.
Speaking of the "other woman," I decided long ago that the "other woman" in our marriage would be the many combative women that I have watched on my TV screen. Therefore, any extra-marital activity has only occurred in between my ears. That way nobody has been used, or emotionally hurt or anything else. There are too many to list, but, in my own way, I've loved them all.
