This is one of the interwoven stories concerning David, his sister Beth, and his girlfriend Susan. To better understand the context of this story you might want to read "Seducing Susan" which I wrote a few months ago and which describes how she finds David having sex and leaves him, and how Beth becomes her secret lover. Having said that, if you choose not to read it I'm sure you'll pick up the basic background.
This story contains explicit descriptions of brother-sister consensual sex, group sex and anal sex. If you are offended by any of these themes, move on to more romantic stories -- this one is not for you!
I try and make my stories realistic but at the end of the day, they are acts of fiction. If you don't think people would behave like this, don't break my balls over it....sometimes fact is stranger than fiction - and actually I don't really care!
All characters are entirely fictitious and all are over the age of 18.
Enjoy!
*****
Susan lay next to me, her head resting on my shoulder. Her face was still flushed from our exertion, a sheen of sweat on her brow. I could still smell the heavy scent of sex lingering in the room, and taste the sweetness of her vaginal juice on my lips. My pussy felt swollen from her attention, first from her mouth and then from the vibrator she had used on me. I felt drowsy, my desire sated -- although I knew that in half an hour she would want more. Her sexual drive was much higher than mine.
After a moment she spoke softly.
"Beth?"
"Yes."
"Are you happy with our relationship?"
"Yes."
"Don't you ever feel you want more?"
I turned my head so that I could see her face. "What do you mean? Are you unhappy with me? Didn't I satisfy you?"
"No, no. It was great. It's just that I'm feeling -- I mean, I want....more."
"More sex?"
She hesitated, her eyes on my face. "Not more as in greater quantity. Just greater variety."
I regarded her. "I've tried just about everything I know on you, Susan. There's no orifice, crack or crevice on your body that I haven't licked, tickled, tasted or fucked. I don't know how to give you any more variety."
She reached up and touched my face gently. "Don't be angry. These last few months have been fantastic....you're fantastic". She hesitated, and I could see that she was choosing her words carefully. "I guess I'm a heterosexual at heart, though. You know... I miss having a guy in my bed." She smiled. "After a while plastic and rubber just doesn't feel the same, even if it is you using it on me."
"So what are you saying? Are you asking me to butt out?"
"No! Absolutely not! I'm just saying that I'd like to get a man over from time to time." She looked at me. "After all, you're still getting it on with your guy, aren't you -- in between our sessions, I mean."
"Yeah -- but..."
She laughed. "There you go, then. It's hardly fair if you are getting man sex outside of our relationship and I'm not. I just want to branch out a little. Perhaps -" she stopped, and I could see the beginnings of a faint blush on her cheeks.
"Perhaps what?"
"Nothing."
I persisted. "What were you going to say? Perhaps...."
She fiddled with a corner of a pillow that stuck up between us. "I was going to say perhaps -"
"Yes?"
"- you would consider joining in."
I stared at her. "A threesome?"
"Or four." She pushed herself up on her elbow so that she was looking into my face. "You could get your guy and I'll get mine, and the four of us could play all sorts of interesting games. What do you think?"
"I don't think my guy would be up for anything like that."
"Hmmm. He'd be the first man in history not to be interested in having two pussies in his bed, then. Still, if you say so." She smiled. "I guess a threesome isn't a bad option, though. How about that?"
"Susan, I don't just fuck anyone....I need to know the guy. There has to be chemistry -- you know, mutual attraction. The moment has to be right. I can't agree to this without knowing him." I paused, watching her face. "I didn't know you had anyone in the background -- who is he?"
"My last boyfriend...we were pretty hot before I caught him fucking out of watch, and I dumped him. I think he's done his time, though, so I'll look him up. I reckon you'd like him too. He's great in the sack, and he has the same temperament as you."
I stared at her without speaking. Her last boyfriend was my brother, David, and the girl he had been fucking when she caught him was me.
My world had just got a whole lot more complicated.
***********
I had to admit that Susan had a point, though -- there was something viscerally satisfying about having a thick cock stretching you open.
I was on my hands and knees on the bed, my hair flowing over the pillow, my hands clasping the sheet. My ass was pushed up, and I was waiting for him.
The mattress compressed as David climbed onto it, standing up, and he swung one leg over my back so that he straddled me. He placed his hands on my shoulders to support himself, and I felt the weight of his genitals briefly resting against the crack of my ass, thick and heavy.
David had fixed a large mirror to the wall next to the bed, and I could see us through the gap between my thighs. I looked at the reflection of the two figures on the bed: David's taut buttocks, smooth and muscular, his thighs tensed with the weight of his body as he crouched over me. I could see the tight, crinkled eye of his ass, and below it the sack of his scrotum and the outline of his balls in it. His thick shaft, engorged with blood, was bobbing as he sought to engage it inside me, the head distended and angry. I could see my own ass, smooth and pale against his darker skin, my thighs open and my swollen sex pushed back, ready to receive him. The lips of my cunt were parted slightly and glistened with moisture in the soft light.
He moved himself down a little to position himself, then he eased forward and I felt the bulbous head of his cock pressing against my sex. For a few seconds my vulva resisted entry, and then I stretched open and the head of his cock popped into me. I felt him pause as he savoured the tightness of that first penetration, delighting in the grip of my cunt as it struggled to accommodate his thickness. The lips of my pussy fluttered briefly around his shaft, then he pushed forward again, the muscles in his thighs and buttocks driving his rod deep into me. I felt the thickness of him fill my belly, and my body was suffused with the heat of him.