I had often fantasized about watching my wife with another man. A hung, muscular guy. I have an average sized package and am pretty good and attentive in bed and I happily go down on my wife at any time and am secure enough to bring toys in the bedroom to help her get off.
I kept that fantasy secret for years though. While we had sex a fair bit we didn't TALK about sex very often and it seemed too weird for her tastes. One day though, i decided to give her a little 'quiz'. I said she had to write down 5 things she'd be into sexually that we hadn't done before. I said I'd do the same. Then we'd swap lists and we'd rate what we definitely wanted to do, definitely didn't want to do (no judgement, no questions asked), and what we'd consider.
I had "watching her with someone else" as a fantasy but also had the disclaimer that I didn't know if I ACTUALLY wanted it, or just wanted to fantasize about it with her.
About a week later, we came home after doing some drinking at a neighbours and had a pretty hot session. Afterwards, I brought up the list again. We both agreed that we shouldn't do it but one of the other things on my list was taking erotic photos of her (which she was open to - she's shy but she's also very photogenic and I think secretly likes to show off). I asked what if we staged a photoshoot to make it LOOK like she's with another guy. We'd find a 'fantasy guy' from a personals site and just stage this hot session but she wouldn't actually sleep with him. To my surprise, she said she'd try it as long as the photos never saw anyone's eyes but ours.
So I get her to describe a potential guy. She doesn't mention cock size but I make that my own secret requirement. We eventually find this guy and set it up. I plan to do the photography and it is all done in our own bedroom to make it look authentic, etc.
We have a quick drink and just decide to get to it. It starts out pretty awkward so we agree that they can do some making out, just to get comfortable and get him aroused.
Next, I start to pose them in all these various positions - starting with slow undressing and including all of the foreplay. So one photo has her on her knees holding his big cock (wedding ring in clear sight), the next with it just touching the tip of her tongue, the next angled to look like she is deep-throating him but she isn't actually.
Same goes for him going down on her. He is millimeters away from her pussy, she is arching her back, etc. She is gradually getting more and more turned on by the unintentional teasing.
Finally we get to the point where they pretend to have sex. He is also rock hard at this point. He has the tip of his cock just barely on her pussy, so her lips are just starting to go around his tip. Her face is flush and she's breathing a bit heavy at this point.
