I thought we were just meeting for coffee

She asked me a question about my gf that I do not remember because the next second her hands were holding my belt buckle and she was trying to get it undone. I said "Whoa! I uh...", and Kim replied "I thought this is why what you wanted? A blow job isn't really cheating now is it?". I have to start this story to explain why I had my affair, it's in no way saying I'm shallow or a bad person, but we all have our moments of weakness and we all do have expectations of what our partner should be to hold our sexual attraction toward them, and a lot of the time this is why people break up or get a divorce. When I was 22 years old I was in a long distance relationship with my then girlfriend (20 years old) whom was away at university. We were going through a bit of a rough patch as she spent most of her time "studying" and couldn't talk to me online or on the phone during normal hours but then I'd find out later in the week that she was at the bars partying it up like every other college/university aged person would do. I never went to college/university myself, I instead started a career in the military. We had talked about me getting out to follow her and be stay at home dad while she went to work and made more than enough to support us. I admit it sounded like a good idea at the time, she was one of the smartest people in her high school when she graduated but the stress of university level courses started to make her second guess herself when she would fail quizes and tests she had been up all night studying for. I would get phone calls at 1 am of her crying and wanting to quit university, but I would remind her of our plans and she couldn't give up on our future because I just couldn't see us being together if her only option was to work at McDonalds for the rest of her life. This went on for the first year of her away at university, then she spent the summer with her mother traveling Europe. When she started back at school in the fall she met some new friends and started living in a house off campus. When I saw her she definitely exceeded the "Freshman 15" rule and put on a lot of weight. She started listening to different music and hanging out with new goth friends that talked her into trying marijuana, getting her belly button, tongue, and nipples pierced, tattoos during drunken spontaneous adventures, and dying her hair unnatural bright colours (her friends told her I would like these changes and I infact did not). By now she was 21 and I was 23, I was starting to think about buying a house, getting married, and having children. I started wondering if I had other options out there and signed up for a dating site to see what they might be. I listed myself for "friends only" because I wasn't actively looking for a new girlfriend. I didn't get very many hits in the beginning, but then after a couple of weeks one of the few women I started talking to was also listed as "friends only". Her name was Kim, she had blonde curly hair, and she was 6 months pregnant. She was using the dating website to find friends saying "she was lonely at home during the day because she was had started maternity leave early, and there was no father of the baby in the picture anymore". I figured a 6 month pregnant woman was ok to talk too, she likely wasn't looking for a relationship or even sex. When we started talking I immediately told her I was in a long distance relationship with a younger woman that was away at school and was a totally different person than I had first met and started dating almost year and half earlier. Each time we talked it was always in chat windows and didn't go on for very long. We started out with friendly greetings and she would jump right to "So how's the gf situation?". I would just rant for a few paragraphs about a phone call early in the morning yet again or my wasted visit to her see her at her house where I ended up just doing dishes that had been piled on the counter for a week and neglected by her roommates. I even once had to clean her room for her and throw out all of the pizza boxes and empty pop cans that had been there for a while. After three weeks of chatting online Kim finally asked me if I wanted to meet up in person and have coffee together. She asked me to come and pick her up at her place, not far from where I lived. She said she would be the pregnant lady waiting on the side walk next to her apartment building. When I arrived there she was, an average woman with dark blonde curly hair in a long t-shirt and leggings carrying a purse. She wasn't dressed to impress but I did get out of the car and shook her hand when we both said it's finally nice to meet in person, and then opened the door for her to get in. She talked to me like I didn't know where I was going and directed me to the only coffee shop in town. I got a coffee and she got an ice'd coffee. She asked me if I wanted to drive around the small town and if I knew about the beach in town, which I infact did not. We drove down and it was starting to get dark out. She told me to park in the parking lot and we just started talking again. This is where she told me that she used to be in the military reserves and was taking time off to start a family when the father of her baby decided he was going to leave her and then go on deployment. She asked me a question about my gf that I do not remember because the next second her hands were holding my belt buckle and she was trying to get it undone. I said "Whoa! I uh...", and Kim replied "I thought this is why what you wanted? A blow job isn't really cheating now is it?". I honestly had no argument and she just continued and told me to lower my seat so she could get in closer. The windows to my car had started to fog up and after a few minutes I couldn't see outside anymore, but then I heard gravel moving in the parking lot that sounded like a car driving and I wiped away the window to see a local police cruiser. I told her we needed to stop and should go. "We can go back to my apartment if you want too, we can hang out there?". I tucked my hard cock back into my pants as best I could and sorted out my seat before turning on the car and leaving the parking lot. The windows were defogged by the time we got back onto the road and I could see Kim looking at me through the corner of my eye as I slightly grinned. I managed to get us back to her apartment building where she showed me where to park across the street and then we went inside. The apartment was very cluttered with luggage and boxes, Kim told me her girlfriend had just moved in a few weeks ago and was still unpacking. I asked if her roommate was there but Kim said she was out for the night and said she had asked her give her the apartment for the night. I wasn't very fast to figure out that Kim had this all planned out as she brought me onto the balcony and she lit a cigarette. I didn't say anything about her being pregnant and smoking, it wasn't my place to tell her she should stop and I thought she might get mad and kick me out. She stood up and said she was going inside for a second, I thought she was coming back but after five minutes I heard her call out to me and I walked in and she directed me to her bedroom. There she was, laying completely naked on her bed with her beautiful large breasts and very pregnant belly bare for me to see. She said "I thought you were going to follow me in?", I replied "I didn't know we were going to do this? I have a girlfriend". Kim said "I figured this is what you wanted all along, to have sex with someone else and have no strings attached? So if you do take off your clothes and come here". I stripped naked very quickly and climbed onto the bed. Kim spread her legs and I could see her very hairy bush and very wet pussy waiting for my hard cock. She grabbed it and guided it before I could put it in and handed me a condom "I don't know where it's been and I want to protect my baby, so put it on". I didn't argue and when I was ready she guided my rock hard cock into her pussy and I could feel the tip of my cock hitting her cervix, it felt so different from sex with my girlfriend, it felt tighter and more forbidden. Then the dirty sex talk started "Oh, gawd this is so good, I've wanted to feel a nice hard cock in my pussy for months...mmm...slower, push deeper...you won't hurt the baby, it's ok....". I asked her if I was the first guy she had fucked since she got pregnant and she said "yes, you are the first guy but not the first person, I had sex with my room mate before she moved in". I got even harder and Kim noticed that "did you like me saying that, I could tell, your cock feels even bigger now. I nodded and said "Yes". I asked "have you ever been in threesome before?". Kim said "Yes, I've been in a threesome, have you?, "No, I've always wanted too, even talked about it with my gf but she really likes Indian girls and we haven't really been around each other to find one we could hook up with". Kim told me "you should definitely try it, it's great having another person to play with". I then asked her "maybe your roommate can come and join us?". "She's out for the night, and besides, I haven't had a threesome in a long time, not since before I got pregnant and I don't want to do that while I am pregnant". I kind of felt like I was being shot down for a moment, and I guess Kim wanted to change the direction we were going. She made me lay on my back and climbed on top of me. She then said "I want to keep this more one on one between us, more intimate and meaningful. She started to gyrate faster on my cock and I was about to cum when she started having an orgasm and pulled off my cock and squirted all over me, I thought she was peeing on me since I had never experienced that before. She kept fingering her clit as she finishe squirting. She then climbed back on and in a few more minutes she made my cock erupt deep inside of her, and I could feel my cum collecting into the end of the condom. She got off and told me to go to the bathroom and clean up. When I came back she was dressed again and told me I was the highlight of her day. I noticed it was daylight out, thankfully I wasn't working that morning or I would have been very late. I got dressed and she walked me down to my car. She gave me a good-bye kiss and as I was getting into my car she called out "I Love You!"....WHAM! That was my wakeup call, I immediately knew this could not happen again and that she was just looking for a baby daddy. I smiled and waved and drove off. My heart racing as I got back to my place and checked my computer to see that my girlfriend had messaged me and called and left several messages asking me where I was and why I wasn't answering my phone. The next day she called I acted as if nothing happened and told her I was at the bar that night with friends and had too much to drink and was passed out in my room with a hangover and my phone was dead. I also checked the dating site app to see that Kim had messaged me the next day and was asking me why I wasn't replying to her messages. After two days she asked me if it was because she had said she loved me. I replied "Yes, that is why. I'm confused about my gf and what I wanted. Kim said she would give me some space and that she was here for me if I ever wanted to come over and fuck her again. It was only ever a one night affair and eventually her husband went back to her and I steered clear of that part of town. As for my girlfriend back then she still to this day doesn't know I cheated on her.....multiple times with different women. I guess it was my way of trying to find an excuse to get caught so I could break up with her, but it took another year and half for us to call it quits after three years together.