My [25M] trans girlfriend [MTF26] just had a threesome with me, and my little sister [19F]

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I don’t think many people read my post about my little sister, but a quick update. She came over to my apartment while my trans girlfriend, who I’ll call Katya, was over at my place. They met, my sister asked how we met. For those who don’t know, Katya used to just be an escort I’d go see. Well, she still is an escort, but I don’t pay to get fucked by her anymore, or to fuck her. We met up at a bar one time unintentionally, got to know each other personally, and fast forward nine months later, we’re dating.

I don’t know if she was expecting me to tell her no, but my sister asked if she could pay for Katya’s services one time. She still at this point didn’t know that I saw her riding her horse cock dildo. I may have exaggerated it’s size in my last post, but it was at least twelve inches. Katya looked at me, and I said I had no issue with it. I don’t know when they did it that week, but I know that Katya has now fucked both me, and my sister.

I honestly wanted to be there for it. I been fantasizing watching Katya fuck my sister, and didn’t know how to deal with it. I felt like I needed to get this out in the air to Katya if our relationship was gonna last long. So I told her the truth. And she got hard over it. I noticed, and let her fuck my face before we continued. She said that she wondered about fucking both me and my sister at the same time, after she finished servicing my sister. My mind went into a haze thinking about Katya fucking me and my sister senseless, at the same time.

I talked to my sister over the phone later that day, while I was back at my apartment. I asked her how Katya in the sack, and she said she would pay her again. I confessed that I had seen her riding that dildo, and was fantasizing about Katya having sex with both of us at the same time. I had no idea what her reaction was going to be, but wondered I went deaf after she said she was down. We made a plan for the next day at Katya’s house, while her housemates were out of town.

I went hungry at work the next day, to make sure that my ass would be clean. My little sister was waiting outside Katya’s house, carrying her backpack with her. I had a dildo close to the same size as Katya’s cock with me, and we were both needing to wait a while for her to get back home.

I unlocked the front door, and we went inside. We both stripped naked, and I was screaming internally at myself as my cock got hard looking at my little sister’s sexy naked form. She pulled out a smaller dildo compared to her horse cock toy, and spread her legs to rub it up and down her clit, while I worked the butt plug I had worn all day out of my ass. Then my little sister caught me way off guard.

Before she put her suction dildo on the floor to begin riding it, she convinced me to come close to her, and bend over the couch. She started eating my ass while I was bent over the couch, getting my hole nice and wet before lubbing up my dildo. She continued riding hers, while also pushing mine steadily deeper up my ass. She pulled it out when my hole was good and gaped, then put the suction cup down on the floor next to her. I lowered myself back down onto the dildo, and we held each other’s hands while we rode our toy cocks.

She still wasn’t done catching me off guard. She reached forward to cup my cock and balls in her hand, and I once she did that, I could no longer stop myself. I reached forward, and starting toying at her pussy with my fingers. She didn’t need much more time after that, and she came on her dildo hard. That sight was more than enough for me, and I had a sissygasm.

Mind you, this all happened before Katya walked through the front door. Part 2 coming soon, as this post is getting long.

NSFW: yes

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