(This story is a continuation of Part II, in which Josh has grown up to take over the role of his father who died fifteen years ago. In Part I, Josh had begun a sexual affair with his twin sister. Now his sister has caught him in bed with their mother.)
Part III: Learning to Share
"I told you he was good" said my sister, with more than a touch of sarcasm.
"Yes he really is" cooed my mother, her eyes still closed, my body still on top of hers. "How much did you see?" she asked my sister.
"I woke up when you went to the bathroom. I was going to cuddle with him, but I guess you beat me to it Mom" explained my sister, who took a seat on my desk chair. She must have been standing a long time. "So I saw everything."
"Funny, isn't it, you've been fucking him all summer and I never caught you two until today, and the first time I fuck him you see the whole thing" my mother mused out loud, her eyes now open, shifting between looking at me, naked on top of her, and my sister sitting in a big frumpy t-shirt on my chair.
"Gee, mom, I guess you're just no good at sneaking around" my sister sassed her again.
"I don't want to get up" she chuckled.
"You don't have to" my sister and I both said in unison. Then we all giggled. As twins my sister and I finished each other's sentences constantly. As my mother and sister giggled I felt my mother's vaginal muscles finally relax, and I could tell my cock had finally softened, so I pulled myself out and rolled over beside her, in between her and my sister sitting beside the bed.
"So what happens now?" I asked, looking down at my semi-flaccid penis, lying on my stomach, glistening after tonight's sexual escapade.
"I've waited fifteen years since your father died. You two were only three years old." Stated my mother. My sister and I both looked at her. "And I can honestly say it was worth the wait. The man of the house is back."
Me? I thought, the man of the house. Well it did have a nice ring to it.
"So what are you saying, Mom?" my sister asked earnestly.
"I'm just saying, Josh is the only man I know and love."
"I feel the same way" responded my sister.
The room fell silent.
"So we'll share." There, my mother had made her decision. She was always decisive like that.
"Wait, what?" I wondered out loud. Suddenly I felt left out of the discussion.
"Well as long as I keep taking my birth control pills, I can't get pregnant, and Mom neither can you, so I guess there's no risk." As my sister thought out loud about their new situation, I still felt like the bystander in the room.
"You love both of us, right Josh?" asked my mother, turning her head to look at me. I looked at her too and our eyes met.
"Yes, of course." How could I say no to that?
Now it was my sister's turn to ask, "Enough to make love to both of us?" that was the question. I couldn't turn my sister down, either.
"Yes, totally, I mean, you both mean the world to me" I blurted out.
I heard my sister sigh. "I was going to cuddle with you tonight before all this happened."
"You still can" offered my mother. So my sister pulled off her t-shirt, revealing her taught young body in the moonlight, and got in bed right next to me, wrapping one arm around me and kissing me on the cheek. Her smooth leg intertwined with mine. My mother cuddled up to me from the other side, caressing my body and kissing me sweetly.
"Doesn't it feel good when he releases inside you?" my sister whispered.
"Mmm yes. Josh is such a heavy cummer, just like his father."
Well that was good to know, I guess.
They continued to talk about sex, as I guess any sexually active mother and daughter would, but it was awkward to have them do it right in front of me, but at the same time it turned me on to hear about how I pleasured them. My sister bragged about how she had helped my stamina build all summer. That was true; I could fuck for as long as she wanted now. At the beginning of the summer I would cum in nothing flat.
I think I drifted off to sleep for a few minutes. I needed to recover. When I came to, they were talking about giving blowjobs. My mother confessed to not being any good at it; it wasn't done much in her day. My sister told her that's how she started messing around with boys, as soon as she turned eighteen senior year. "You just start like this" my sister said, and before I knew it she took my cock into her mouth. Was I already hard? I guess I was!
My mother and I watched my sister bob up and down on my shaft, her saliva making me glisten in the night air. Finally she came up for breath. "You can do that as long as you want. He never cums from just oral." That was true.
"Let me try" my mother said as she leaned over to take my sister's place. My mother's mouth felt just like my sister's. Her lips wrapped around me, her tongue curled around my stiff shaft. I felt my tip prodding the back of her throat. Her teeth just barely grazed me.
"Mmm, yes Mom, just like that" I moaned.
"Call me Deborah" she said, taking a deep breath before taking me back into her mouth and working me over with more effort than before, twisting her head back and forth, humming on me, doing everything she could to pleasure me. It sent shivers up my spine. My eyes closed and I moaned in ecstasy.
"Do it all you want, Mom. He's still not going to cum." Giggled my sister, watching my mother's technique.
