It started as an affair, but now I’m (f26) fucking both him (M31) and his girlfriend (F30) [MFF] non-fiction sex stories

I’ve written many stories about the evolution of my relationship with my current sexual partner, Ben. Because of the pandemic I haven’t been sleeping with anyone else. Even though he lives multiple states he keeps me more then satisfied and we have an electric sexual chemistry. Here are my past two stories about him:

The first time we hooked up: [[MF] [Cheating] Fucking my Coworker all night long on a Work Trip](https://www.reddit.com/r/gonewildstories/comments/c0o2ex/mf_cheating_fucking_my_coworker_all_night_long_on/)My first time having anal: [How my coworker is training me to be his little anal slut [MF]](https://www.reddit.com/r/gonewildstories/comments/kaovj1/how_my_coworker_is_training_me_to_be_his_little/)

Now, there are actually a million stories I could write. There’s so many things I’ve done with him for the first time and so many hot situations. We’ve done CNC roleplay, and I’ve even wore a cat-tail butt plug with him…. I love being his submissive little girl, and we’re always talking about new things we want to try. But one of the hottest ways that our relationship has evolved is that I’m now sleeping with both him and his girlfriend. If you haven’t read the story – some quick background: we met in 2018ish after I started a new job on a work trip (our company works remotely). The first night we met everyone went out drinking and the two of us were flirting all night. This ended in us secretly going back to his room, and fucking literally all night. The chemistry was insane. At this point, I had a serious boyfriend, and he had an even more serious girlfriend who he has been living with for some time, and we were both cheating. Flash forward a year and half, I broke up with my boyfriend and moved cities. But he came clean to his girlfriend and they decided together that they wanted to be in an open relationship.

At this point, I imagined that she must hate me. Their sex life is pretty vanilla, and she’s a sweet girl but doesn’t really come across as the “open relationship type” but more the traditional relationship, waiting to get married type? She has never had sex with anyone else except him because they started dating when they were quite young. I thought she was sort of going “going along” with the open relationship thing, so I wasn’t quite sure what she thought of me, and her comfort level with me. But, I was going to visit him in the city where he lives for a couple nights before visiting some other friends. At first he told me he’d get the two of us a hotel room. But then, literally the after my flight landed and I was already at the airport, he texted me to just get my uber to his apartment instead. I was confused and asked why. And he said…. “Kate wants to meet you. The three of us are going to have dinner.”

“WTF?!” I thought. He hadn’t mentioned this before. *(Though, he 100% knows that I am bi, and I had told him previously that I would be down to have a threesome with his if GF she was. But, I thought that was hypothetical because I thought she was straight and had no interest.)* Now I was super nervous. I hadn’t met her and didn’t know much about her. I wasn’t sure if she wanted to meet me to scope me out, hook up, or what… I was super nervous about her hating me for some reason. And just the fact that she knew I’d been fucking her boyfriend behind her back beforehand… But whatever. I told him to bring me a shot of vodka when we met me in his apartment lobby and decided to go with the flow…

We got up to his place and right off the bat she was super friendly and sweet. She helped me get settled then she had to run out and pick up a the food. As soon as she left, Ben grabbed me, pinned me to wall, and tore down my tights, hiked up my dress, and started fucking me from behind with no warning. He didn’t give any time to warm up, he was just fucking me relentlessly for about 5 minutes before he was ready to cum. He grabbed me by the hair, shoved me on to my knees and shoved his cock in my mouth. He roughly fucked my face for just a few minutes before cumming with no warning. (Another massive turn-on of mine.) I was soaked. After he finished he just walked away and pretended like nothing happened. It was so fucking hot.

His girlfriend gets back with our food and we start eating. But, we probably had more alcohol than food. Ben was making us strong cocktails and we were getting pretty fucked up. We decided to go in the hot-tub. We all got changed and went down. There were other people in the hot tub but I was really drunk and started getting touchy with both Ben and Kate under the water. I was touching their legs and flirting with them both. I was a little more handsy with Ben and it was bordering on inappropriate, but I didn’t care… As soon as we got back up to the apartment wrapped in towels, Kate just started making out with me right away. Ben watched as we started to hook up. Honestly my memories are a little blury at this point. We both went down on Ben at the same time, licking up and down his cock together and making out every once in a while. Then he fucked us one at a time while we ate eachother out. The first time he was fucking me, kate said “do you like getting fucked by my boyfriend?” I should mention she has never hooked up with a girl before but was she was suuuper into it, and fantastic at going down on me. She made me cum very hard. Eventually, Ben came in my mouth, and Kate and I started making out with his cum. The entire night was extremely pornographic.

We were hooking up for hours. Pretty sure there’s no position we didn’t try. Eventually, I got out my vibrator and Kate and I were using it on eachother while Ben took a break before fucking us both again. The most surprising thing about the night was that Kate was very into my ass. She actually gave me a rim job for a while. Ben came another time in my mouth while his girlfriend ate out my ass. Ben said she’s never done that to him before… and I’ve never had a girl do that to me before, so it was extremely hot. The last time that he came was in inside of his girlfriend, and I ate his cum out of her pussy, which has always been another fantasy of mine…

I can’t count how many times we all came collectively, or how many different positions we tried. In the morning we hooked up again, and I watched him fuck her until he came inside her while she was eating me out and making me cum. I loved watching his muscular body fucking someone else…

This wasn’t the last time the three of us hooked up…. the three of us eventually ended up going on a trip together last month, having threesomes almost every night… Not sure where things will go from here, but I have more stories both with just Ben and I, and with the three of us to write, if anyone is interested….

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