A Stepmother's Sin - Chapter 5: I try to understand what is motivating my stepson - Sex Stories

A Stepmother's Sin - Chapter 5: I try to understand what is motivating my stepson

... frustration. I continued to tease him, barely touching the smooth, very sensitive skin of his glans and the area right beneath the head. "Shit, mom... I can't take that... you are driving me crazy." "I know. That's why I do it." Robert patience with my teasing was wearing thin. He stood up, pulling me standing as well. As he did the previous night, in order to kiss me more comfortably without bending over so far, Robert placed my arms around his neck, and simply hoisted up my tiny frame, grabbing my both my legs and pulling me so I was straddling his well conditioned torso; my arms wrapped tightly around his neck as we kissed. I liked the way he was able to lift my light frame at his will. It made me feel petite and vulnerable; somewhat powerless in the presence of this strong powerful man who was both my lover and my stepson. I felt the head of his erection bouncing against my legs and buttocks as we necked like teenagers. I guess that should not be too surprising since one of us was a teenager. Then I felt his cockhead start to search more urgently for my opening, or any opening! Just as had happened the previous night, once the head of his penis found the wetness of opening Robert arched up for gain entrance to my wet and dilated vulva. Since he did not know that I had already inserted my diaphragm, I decided to tease, and test, him a bit. I was curious to see how he would react to my teasing. With the head just at the opening, actually inside me less than an inch, I ...

... broke off our kiss and said, “whoa baby, you can’t go inside me quite yet.” He looked at me puzzled, as if to say, ‘Why not?’ “Baby, I need to get my diaphragm in place.” But rather than pull away, I held myself steady, my arms propping me up on his shoulders. Then I lowered myself ever so slightly, allowing his cock to edge inside me another half inch or so. I had just the head inside me inner folds. I looked into his eyes with all the love and lust I had, and I contracted my vagina to give the large bulbous head of his cock a loving squeeze. The moan that escaped his lips and the sudden pulse of his entire penis let me know he felt my contraction, and he liked it. He liked it a lot. I told him, “Baby, you feel so good. You stretch me wider than anyone ever has. But you can’t go inside quite yet.” I adjusted my weight on his shoulders slightly causing me to slide down on his rigid pole just a bit. “Oh, baby, you need to lift me off your tool. I will get my go diaphragm in place. I will do it quickly.” I contracted my vagina once again; and his penis throbbed again in response. “But, Robert, you can’t fuck me bareback. You just can’t. No matter how good it feels.” And I squeezed his cock's head with my vagina one more time. I was getting an enormous amount of pleasure from teasing my boy like this. I was watching the facial expressions. He was completely lost in his lust for me at that moment. Since the very first night, when he caught me spying on him in my voyeuristic moment of ...