(swinging/m/f/preg) Last Year's Work Party This happened last year, and if I'm lucky it'll happen again this year! The annual fourth of July party had pretty much started to wind down when one of my co-workers invited a bunch of us over to his house. Not ready to go home and slouch into my couch position in front of the tv just yet, my wife and I agreed to head over there. When we arrived, only about 13 people were there, and all of us continued to drink. Around probably 9 pm after all of us were throughly buzzing, the conversation drifted into sexual discussions. My wifenever one to be shy (and of course the alcohol helped), told everyone that she had a fantasy about swapping partners. I had never heard this, and while I was sort of turned on by the idea, I was still embarrassed that she had brought this up in this venue. The host took the topic and ran with it, saying that in college him and his gf would go to swinger parties. A few others chimed in saying they too had "swinged". I was amazed. The host did a quick count of how many in attendance would consider switching partners for the night, and almost all did. The others left, laughing drunk. We were down to about 4 couples and while I was skeptical, my wife gave me a "pretty please" face. I dissented and didn't leave. The host ran and got a hat. Each of us numbered off 1 through 8. He then proceeded to the ground rules. 1. The male would go to the female's house and spend the night. 2. The couple would agree how far to go. Whether it be just a striptease or an all out love-making session. 3. If asked to stop at any point both people must stop. 4. Nothing would be spoken about this at work. We all agreed and went around in the circle and picked numbers. My wife axiously grabbed a number, then I picked out a number. I picked the number 7. We went around and said numbers and one by one people were paired up. My wife got paired with Kyle. He was a 23 year old fresh-faced at the company. Kyle as I had gotten to know him was a college hockey player at his school. I knew he was going to rip my wife up, and that she was going to let him do anything to her. His hulking 6'2 build made me wince at the thought of my wife's pussy in our bed being pounded. The host said my name and I responded with 7. He looked over and said, "Well, you will be going home with Kerina." Kerina. A girl I knew well. 30 and a sweetheart. She was our international liason for France. I got up, kissed my wife goodbye who had already started to gather her stuff, and walked over to Kerina. We talked for a second, both jittery and preceeded to get into her car. We drove about 30 mins to her townhouse and walked in. She was wearing a black tanktop and khaki shorts with sandals. Kerina wasn't gorgeous or even beautiful. She would be a last-ditch effort in a bar before you started hitting on the fat girls. She had shoulder-length brown hair and green eyes. Her tits sat nicely in her tank top. She asked me if I wanted a drink and I said no, nothing more tonight. We sat in her living room and I realized that she was basically in the same position as me. A spouse who wanted to experiment. I looked at her and asked her if she wanted me to leave, she said no. I was tracing her body with my eyes. Her feet were amazing. Those brown intertwining leather bands perfectly accentuating her red toenail polished feet. I looked at her and said, "Look, I'm feeling the same way as you. My wife is out there same as your husband. But I think we should at least have some fun since it is only fair." She acknowledged and we headed upstairs. In her room were pictures of her and her husband at various locales and even some wedding pics. We were on either side of the bed when I asked her what she wanted to do. She said she wanted to see me naked. I agreed and took off my tee shirt, then my shorts and then my boxers. I stood there naked, my penis hanging. She stood there taking in my figure. I started to get a little aroused when I saw her casually graze across her nipple. I asked her if she would strip for me. She obliged and took off her tanktop, then her bra, her shorts and her panties. Her skin was fair and not a single tan line on it. Her tits as I asked were 36C. Her areolas were large and pink, nips standing on end now. I'm sorry I'm not shaven. I wasn't exactly expecting anyone besides my husband to see me nude. I laughed and asked her to lay on the bed. I moved in over her and kissed down her neck, feeling her heartrate tremble as I breathed down her neck. Over and over I licked her earlobe making her coo with glee. She moved her hand down to my cock which had gotten a considerable more engorged by now. Slowly she started to jerk me off. I moved down to her tits and sucked each tit while squeezing the other. I moved down to her pussy and smelled its scent. She pushed my head down to her awaiting twat. Her juices spread onto my tongue, a bittersweet taste. Different than my wife's vegetarian diet-induced bitter juices. I lapped it, making her squeal, taking her pink pussy lips into my mouth. I wiggled and waggled my tongue inside of her til she could take no more and said to fuck her. I got up and looked around the room for condoms to no avail. She said not to use any that her husband and her had been trying for months to get pregnant but to no used. She thought she was sterile. Without a doubt in my head I stuck my cock head in and then the rest deep into her pussy. She cried out as I did so. I'm not big in anyway but I could tell my cock was touching the right places. I started slowly, letting all my ridges caress her pussy lips. I started to gain more speed and as I did she grabbed a pillow and put it over her face to muffle her moans. I kept pumping and pumping her juices making her pussy so lubed it was almost effortless. Finally I saw her arms outstretch and her fingers grip the mattress, and her body tense up. She let out an enormous scream and I kept pumping again and again she moaned. Finally I shot my load deep inside of her ofr what seemed like eons. I dumped more cum into her than I had since I first fucked my wife. I pulled out and was about to clean off when she grabbed my cock and started licking it clean. It felt so good to have a post-fuck bj. We both collapsed and sat there in our own sweats. She smiled at me and got up and pulled on her sleep pants. "God that felt good. I can still feel it." I acknowleged and I touched her tits. There were to be many more rounds of sex that night, experimenting multiple ways, some of which she said she had never considered before. I was oddly turned on by the fact that I saw pics of her and her hubby by the bed as I fucked her. I wondered how my wife fared. I got home the next morning around 11am and my cock was aching from sex. I came in and my wife was laying in bed. She made a "wow" face as I went to take a shower. I smiled and said, "Yeah, wow." A few weeks later at work, I was walking out to lunch when I felt a tap on my shoulder. I turned around to see Kerina standing there. Much more professional than our night together. "I need to talk to you." She said. I obliged and we went down the street to a cafe. She told me how she was late and had taken a pregnancy test and it was positive. I asked how she knew it was mine, and she replied that her hubby had gotten tested officially and HE was the one who was sterile not her. I nearly jumped and ran away. She saidnot to worry, that they wanted a child so bad that her hubby had agreed to let it slide and she had too. I was relieved. She smiled, got up and kissed my cheek. "Thanks" she said as she walked back to work.