my step sister fucks my bf but im not mad im so fucking horny

The sun had just started to dip below the horizon as I lay on my bed, scrolling through the videos on my phone. I had been feeling incredibly horny all day and nothing seemed to satisfy me. That’s when I stumbled upon a video titled “My Step Sister Fucks My Boyfriend.” Curiosity got the better of me, and I tapped the play button.

The video began with a shaky introduction, the camera focused on a blonde girl’s face. “Hey, it’s me, Martini,” she said in a whisper, her blue eyes sparkling with mischief. “You’re not going to believe what I’m about to show you.” The picture shifted, moving down to a bed where my boyfriend, Jack, lay naked and asleep. Martini snickered before climbing onto the bed, straddling Jack’s hips.

My pussy clenched, my heart racing as I watched Martini grind against Jack’s cock, which was only half-hard at first. I knew I should feel jealous, betrayed even, but there was a little voice in the back of my head whispering that it was kind of hot. I slid a hand into my shorts, my fingers brushing against my clit as I watched Martini expertly stroke Jack’s cock until it was fully hard.

Leaning down, Martini captured Jack’s lips in a searing kiss before raising herself up and impaling herself on his cock. Jack stirred awake, his eyes opening in surprise before he gripped Martini’s hips, guiding her movements as she rode him. Their moans filled the air and I had to bite my lip to stifle my own, my fingers picking up speed as I watched my boyfriend fuck my step sister.

They changed positions, Martini on her back as Jack pounded into her, her small tits bouncing with each thrust. Martini threw her head back, her mouth open in a silent scream as she came, her pussy clenching around Jack’s cock. Jack followed not long after, pulling out to cum all over Martini’s flat stomach.

As the video ended, I felt my own climax overtake me, my pussy pulsing around my fingers as I came hard, my ass lifting off the bed. I lay there, panting, trying to process what I had just seen and felt. I should be furious with Jack for cheating on me, but all I could think about was how hot it was to watch him fuck Martini.

I knew I should confront Jack, figure out where we stood as a couple now, but a part of me didn’t want to. A part of me wanted to keep watching the video, to keep fingering myself as I imagined Jack fucking Martini in various positions and places. I had never considered myself a voyeur before, but seeing someone else with my boyfriend had been a major turn-on for me.

As the night went on, I continued to watch the video, coming multiple times before finally drifting off to sleep. I dreamt of Jack and Martini, their naked bodies writhing together, Jack’s cock sliding in and out of Martini’s tight pussy. I woke up the next morning feeling more sexually frustrated than before, my body aching for attention.

Downstairs, I could hear Jack and Martini talking and laughing, and I knew I should go down there and confront them, but I couldn’t bring myself to do it. Instead, I snuck back into my bedroom and watched the video again, my fingers finding my sensitive clit once more.

From that day forward, I became addicted to watching the video of Jack and Martini, cumming my brains out every time I watched it. I started to notice changes in my relationship with Jack, little things that let me know he was still fucking Martini behind my back. I caught him sneaking into her room at night, and I saw him leaving condoms in her bathroom wastebasket.

I should have been angry, but all I could think about was how I wanted to join them, to feel Jack’s hands on my body as he made me moan. I started to leave my door open at night, hoping Jack would sneak into my room instead of Martini’s, but he never did. I started to touch myself in front of the open door, letting my moans and the sound of my fingers in my wet pussy travel down the hall to his room.

It wasn’t long before Jack started to join me, creeping into my room and watching me touch myself before climbing onto the bed and taking over. We fucked every night after that, Jack confessing his love for Martini while he pounded into me. I confessed my love for the two of them together, for watching them fuck and imagining it was me.

Eventually, I worked up the courage to tell Jack and Martini about my watching them in the video, and to my surprise, Martini was excited. “I’ve been hoping you would find out,” she said with a grin. “I’ve always wanted to fuck you, you know.”

That night, the three of us had wild, uninhibited sex, Martini and I taking turns riding Jack’s cock, kissing and touching each other as we did. We fucked so hard, in so many different positions, that I was sore for days afterward. But it was the greatest sore I’d ever experienced, and I couldn’t wait to do it again.

From that night forward, our relationship continued in a strange threesome, with Martini and I competing for Jack’s affections while also satisfying each other. I never did confront Jack about cheating on me with Martini, instead choosing to embrace the fact that our relationship had changed. I was no longer jealous of Martini, but rather, I was jealous of Jack for having her all to himself.

As I type this, Jack and Martini are in the next room, the sounds of their fucking reaching my ears as I sit here and write. I should be in there with them, pleasuring myself while I watch them, but I needed to get this story down first. I can hardly wait to finish it, to hear Jack moan my name as he cums inside me, or to have Martini’s lips on mine as she makes me scream her name.

Nothing is off-limits in our relationship now, and I wouldn’t have it any other way.