" He knows that Ally has only had one other partner besides her husband. Fighting the urge to speed over there and fuck her, he tries to push down the...bulge that is happening in his pants."I know this isn't like me but just listen. Something has ignited a fire within. I can't explain. I'm not leaving Sam and I don't plan on telling him either. It'll be our little secret. You don't have to worry about him coming after you. I want an affair and you are super hot so I want it to be with you." 'And. His cock poking at the entrance of my cunt. I squirmed until the head of his cock slipped between my hairy pussy lips.I moaned softly as I started to ride his cock taking just the head of his cock into my hole. Keith hooked his arms around my thighs as he held me up. He then slipped me down onto his huge cock filling my pussy fully. Our tongues entwined as we kissed deeply. I moaned softly as that huge cock rubbed over my g spot. I started to ride his cock wildly as he pumped me up and down on. Then my sister screamed/moaned louder, and i felt her cumming. As she was cumming, I felt a familiar sensation, and before i realized it, i was cumming along with her. There was so much cum in my sister's pussy that it overflowed onto the bed and the ground.I took my dick out, and layed down on the bed next to her. Then I realized that i just released my sperm into my sister.As if to read my mind, my sister said "Don't worry, I'm on a pill"I sighed in relief that i didnt get my sister pregnant.. I never had release from her since Mistress kept a cock cage on me and only allowed me release every few days, mostly by her hand, and occasionally in an all-night liaison as lovers. I sorely wished that Donna could get her comeuppance someday for being such a cock tease. I made my way to the discipline room a few minutes before two, and got my second surprise of the day. Donna was the one bent over, completely naked, feet well apart, and bound to the structure! I had never seen her completely.