Years ago, when I was in the military and single I lived in an apartment off base.
There was one lady (Angela) who worked in the rental office. She wasn't particularly beautiful looking but she radiated sexuality.
We usually spent a few minutes flirting when I'd go in to pay the rent once a month.
It never went past the flirting stage because she had a wedding ring on and pictures of her husband and kids on her desk.
Then, one day she asked me if I was single.
I thought "uh-oh. She's gonna try to fix me up with one of her friends"
I told her I was and asked her why.
She said "Oh. Just wondering".
That night my phone rang.
It was her and she asked if she could swing by. She needed to talk to me.
Again, I thought she was going to try setting me up with some friend of hers.
She knocked on my door a few minutes later and I let her in and offered her a drink.
She said "I'd love a drink. If you've got anything strong I'd appreciate it."
I sat in my recliner and she sat on the sofa across from me, taking small sips of the Jack Daniels in her glass.
"You know I'm married. Right?" She said. "And I know you're single."
"Yeah. I kind of figured you were married. What with the ring and everything."
"Well, when you've been married for a while you start looking for ways to spice things up. To prevent the sex life from getting stale."
"Uh-huh" I mumbled. Now I had no idea where this was headed.
"Well, a few years ago my husband and I started a game. On the half way point through each year of marriage we each submit to the other, three things we want to do sexually. The wishes are written down on pieces of paper and put in a box.
The other person picks one of the three things and then we do that. One time only.
Then we switch and the other submits their three wishes."
"This year my husband went first and I pulled "I want to have sex with one of your friends" out of the box.
It took some time but I finally got one of my friends to agree to it.
This was the first time we've included others in our game.
I couldn't believe it but my best friend since grade school had sex with my husband.
I was so freaked out that when it became my turn to submit my three wishes, I cheated and wrote the same thing on each piece of paper."
I figured that somehow I was about to become part of their game but wasn't quite sure in what capacity.
"Can I get a refill?" she asked. Indicating her empty glass.
"Sure." I told her.
"Make it a double please" she replied.
After getting her drink, I sat back down on the edge of my chair and leaned forward.
"Just where is this leading to?"
She looked at me and said "I can't believe I'm about to say this..." She brought her glass to her lips and slammed her double shot of JD and said "...I want you to fuck me while my husband watches!"
She covered her face to as she turned 10 shades of red.
"If you say no, I'm going to die from embarrassment!"
We talked for a while and it came down to her just being really mad at her husband for not only involving another woman but picking one of her friends was adding insult to injury.
She wanted to balance the scales more than anything else.
We agreed to certain conditions (which is something they should have done before they started their little game) and set up a night for me to come visit them.
That Friday, I showed up at their door
She greeted me and introduced me to her husband.
We sat down, had a drink and started talking.
I asked him if he knew why I was there and if he was ok with it.
He said "Sure. Turn about is fair play after all but at least I didn't have her watch me have sex with her friend. This is kind of freaky"
"Did she tell you the rules?" I asked but from the questioning look on his face, I knew she hadn't.
She looked at him and told him "Tom, You have to be tied to a chair while we're doing it."
"Yeah Tom. I don't want to have to worry about you being out of my line of sight and suddenly deciding that you don't like some guy screwing your wife."
He thought about it for a bit and finally agreed to it providing that I didn't try any "funny business" with him.
I told him to not worry about me. I wasn't into guys.
Angela came into the living room dragging a rolling office chair and some lengths of clothes line.
He sat down in the chair and we set about tying his ankles to the base of the chair and his wrists behind it.
Then we ran a piece of rope from his ankles to his wrists just to make sure.
I had Angela stand in front of Tom and I stepped up behind her.
I unsnapped her jeans and worked my hand inside, down the front of her panties and started to gently rub her pussy through the thin layer of her panties.
She reached back and started rubbing my cock through my jeans.
I used my other hand to start unbuttoning her blouse and when I reached a certain point, I pulled out of her pants and finished removing her top.
Once I had her top off, I told her to keep facing Tom and take her pants off.
She unzipped them the rest of the way and pushed them down over her hips.