Melanie watched as her sister slowly sank back down onto my cock. Melanie could see everything. She could see Brittany’s tight little asshole, Brittany’s wet pussy, and my cock and balls perfectly. Brittany began to bounce her ass up and down again, riding my cock hard and fast. I matched her momentum as best I could, fucking her back. It must’ve looked incredible from Melanie’s perspective — to actually see my cock sliding in and out of her sister’s warm, wet pussy. To watch her sister’s ass cheeks bounce up and down with Brittany’s little brown asshole peeking out from in between them. She could see my balls bouncing with each thrust. Honestly I don’t know how she kept herself from masturbating to this.
“I can’t last too much longer,” I said in a hushed tone to Brittany, who had given up on holding in her moans. In fact, the room was basically filled with Brittany’s cries of pleasure, our bodies slamming together, and the wetness of her pussy and my cock.
With that, Brittany sat all the way back up. She let my cock slide out of her pussy, and at once I knew what was happening. Brittney reached back and held my dick in place, lining up her asshole with my swollen cockhead. I heard Melanie say something like “Oh my God” as Brittnay sat herself down onto my cock. There was some resistance at first, but Brittany’s asshole gave way and slowly my cock entered her final hole. She groaned loudly as she lowered her body all the way down until I was completely buried in her asshole. Brittany began to ride me again, moaning even louder this time. I held onto her hips and let her do most of the work initially.
From Melanie’s perspective, she saw Brittany’s ass cheeks bouncing up and down as my throbbing cock stretched her asshole. As Brittany began to fuck me harder and faster, I matched her pace, thrusting into her gently as she rode me. Her ass milked my cock — the feeling of her tight little asshole sliding up and down my shaft was incredible. The fact that Brittany’s little sister was watching my cock disappear into that tight little asshole was fucking intoxicating.
I knew I had the “green light” to come whenever, so I just let myself go, enjoying the experience. The fact that I was fucking my girlfriend in the ass right in front of her little sister was unmatched, and I was only able to last about two minutes before I tensed up and I felt the familiar tightness in my balls. I knew that I had hit the point of no return.
“I’m gonna come,” I grunted, loud enough for Melanie to definitely hear me. I wanted her to know I was pumping a load into her sister’s asshole.
Brittany picked up the pace slightly. I arched my back, and I felt my toes curl as I began to ejaculate inside Brittany.
She and I both moaned loudly as the first rope of cum erupted out of my cock and into her ass. I heard Melanie say something like “Oh my God, holy fucking shit.” I moaned loudly and shot another three ropes inside of Brittney’s butt. I hadn’t come this hard in ages.
I was so turned on that Melanie was watching me empty my balls into her sister’s bowels. Britteny was still riding me, coaxing every last drop of cum from my cock. Finally, my orgasm finished. Brittney slowly leaned forward, letting my dick slide out of her ass. Once I was out, she shifted back into position but stayed put, letting Melanie get a good look at her punished little asshole with my cum dripping out of it.
A moment later, Brittney got up. She quickly went to the bathroom to clean up, leaving me and Melonie alone together. I sat up, looking at Melanie, who gave me a smile and a look that spoke for itself. I returned her smile. I didn’t really know what to say, but it wasn’t at all awkward. We both just sat there, sharing a surprisingly comfortable silence (aside from my heavy breathing) until Brittney came back.