My Wife Is Very Conservative, But ...

My wife is very conservative in sex, but I noticed that she might want an adventure, if she had the chance to do so in complete discretion.
I found this site and in addition to many fabrications, I also found true experiences and confessions.
I have a fetish: I like to share pictures of my wife with married people with similar affinities.
My wife doesn't know about this.
I can't tell her, especially that I imagine what someone would do to her. That really turns me on.
Does anyone have any suggestions?