A Stepmother's sin - Ch 8 - Robert returns to college - the end of a wonderful summer: - Sex Stories

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A Stepmother's sin - Ch 8 - Robert returns to college - the end of a wonderful summer:

Date: 11/18/2017, Categories: Taboo, Author: submissivemom72, Rating: 9, Source: LushStories

I felt something between discomfort and pain as my vulva was being stretched apart. Part of me wanted to ask Robert to stop before he tore my vagina; but much more of me wanted to do this for my stepson. I wanted to accept his present inside me. “Baby, just go easy. You don’t want to tear mommy’s pussy on the last day of summer.” I reached around under my legs and pulling myself open as Robert continued the slow assault on my pussy. “Baby, I don’t think my pussy will ever be the same again after you get that thing in me.” I really meant ‘if’ you get that inside me. At the same time, there was something arousing about struggling to accept this vibrating demon up inside me. Then Robert started twisting the dildo slightly as he moved it in and out of me. Suddenly, almost magically, my vagina spasmed, and the large head seemed to pass a tight restriction at the very mouth of pussy and slid about two or three inches deeper inside me. I must have dilated a bit more; more than I ever had before. The twisting motion and the vibrations worked together and I began to start to respond. Once past the first restriction in my vagina, I was far more open and the vibrating head felt good on my inner walls. “Oh, baby, that’s it. I think we did it! I think you made it past my opening. It is starting to feel good.” I pushed myself down against Robert’s thrusts. After his initial ‘break through’, deeper penetration seemed easier, and enjoyable. My natural lubrication coupled with the K-Y gel ... made the stretching of my tight little pussy enjoyable rather than painful as I had feared moments ago I started to moan and hump back as Robert began to stroke longer deeper strokes in and out of my fully dilated vagina. I felt an orgasm building when Robert stopped fucking me with the dildo, leaving it vibrating in place. “Oh baby, please don’t stop. I am almost there,” I pleaded. But Robert pulled me forward, pulling me almost into a sitting position, I was forced to reach down and grab the large dildo to keep it from shooting out of me on to the living room floor. Glancing between my legs, I could see more than three inches of this monster still sticking out of me, indicating I had taken less that five inches or so of this red 'monster dick,' yet, I felt so very, very full. As he pulled me to a standing position, I struggled, not to hurt myself by driving the toy too deep, too fast. Standing up, bowlegged, I continued to hold the vibrating tool in place as Robert walked me to the chair which he instructed me to straddle. The vibrator slid out of me slightly. Robert reached between my legs and affixed the suction cup to the seat of the chair as I straddle the chair per Robert’s directions. I was now astride the chair, leaving me with the device deep inside of me. I slowly began to raise and lower myself to push it in and out of me. I started moving up and down only about two inches. I felt the strain of my inner thighs as I slowly started fucking Robert’s present. I was glad ...