Recently caught my wife using a dildo to fuck her own ass, somewhere she won't let me fuck her. I watched her for some time, but what I found bizarre was how turned on I became when she began to shout out someone's name as she orgasmed. The name she shouted out a few times as she shook and bucked all over the place was Nathan. Nathan is my wife's seventeen year old nephew, and they've this past nine months become really close, with him often around our place especially when I'm not home. Now to the really strange thing. Since seeing her fuck her own ass and hearing her say her nephews name as if it was him fucking her, I've not only dreamed about him fucking my wife, but I've also masturbated whilst thinking of him fucking her. Indeed the more I think about it, the hornier I get and the harder my cock becomes. Just typing this now has gotten my cock so erect imagining his cock plowing my wife's asshole. If only I could think of a way to get her to allow me to watch them fuck. It'd be such a turn on and I'd toss myself off all over my wife's face and tits.