This is a story of consensual sex between close family and blood relatives, brother-sister, daughter-father, son-mother, aunt-nice/nephew. Please stop now if this is not your scene, or you may be offended, if not enjoy (I hope).
This story is set 18 years after My Sisters Girlfriend PT3. It can be read as a standalone piece as relationships are explained, or if you want you can read the whole saga.
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Hi, my name is Lexi and my twin brother is Luke. We're a pair of normal horny eighteen-year-olds, who have found a way to counter our horny-ness, not surprising given our unconventional family set up. Our parents are a loving and lovely lesbian couple called Jill, who is our mother and Jan who is more dominant and more of a father figure. Our biological father is John who just happens to be Jans brother.
We've always known that John is our biological father since we were able to understand the situation, and he has played a big role in our upbringing, mostly in the background, letting Mum and Jan take the lead, but always there, doing the things that are more male-oriented, like taking Luke to sports and things like that, but he has never neglected me, it's just that he has rightly let Jill and Jan have the major parenting role, it's a great set up as Luke and I have three parents we can talk to.
For the rest of this story, if I use the term Mum then that refers to Jill, whilst Dad or Father relates to John.
Luke and I had been getting together for a while now, ever since we have become legal, and there were plenty of instances before that where longing glances were exchanged, we knew what we wanted to do, but regrettably, nothing ever acted upon.
We were in my bedroom getting together really well, my top was off letting Luke play with my small 32A sized tits, whilst I was giving him what seemed to be a great handjob from the noises he was making and the way his knob was throbbing in my hand, when without warning he spasmed and shot a load of hot sticky cum all over my belly and tits, thick strands of his cum leaving trails over my body. "Sorry Sis, I couldn't wait, knew you wanted to finish me in your mouth this time, but just couldn't hold back."
As I looked up my blood ran cold: Mum was stood in the doorway watching everything that was going on, and from her position, she could see Luke had his hand up my very short skirt, had two fingers deep in my pussy and was playing with my clit with his thumb. Lukes actions and the look on Mums face was enough to send me over the edge and with a shout of, "Oh fucking hell, I'm cummmming," that changed into a wild scream as I hit an intense orgasm. Normally I hold down the noise when our parents are in the house but not this time.
As I came Luke looked up saw Mum and went, "Shit, oh shit, shit, shit, shit."
"Yes, oh shit," came from Mum, "right you two downstairs NOW, as you are, we need to sort this out as a family, Lexi leave that stuff on you and Luke, try and stop it dripping out of your cock."
"Mum. I can't, I'm half naked and John is here, he'll see me naked and with Lukes cum dripping down me."
"Not my problem, anyway it won't be the first time he's seen a female relative naked, NOW-GET- DOWNSTAIRS-AT-ONCE." There is no arguing with Mum when she's like this.
Red-faced with shame, not for being caught doing what we did, but the fact that I was now stood in front of all three of my parents with drying cum glistening on my body, tits on show, no panties and a skirt so short it only just covered my arse. Lukes cock was hanging semi limp but with cum still leaking from it.
"OK, what's been going on between you two and for how long?" John asked.
"A while now," Luke boldly replied trying to brazen things out, spoiling for a fight.
"What have you done, how far have you two gone? Have you fucked?"
"None of your business, and stop looking at my tits, your my Dad," I shot back.
"Lexi, John has a right to know, you said it, he is your Father, and I'd be upset if he didn't look at your tits, they're nice, small, but nice," came from Jan. What the hell did that comment mean, I know she a Lezza, but what?
"Since we've been legal," came from Luke again, "nothing too far yet, just hand jobs and oral, plenty of oral." Said with pride and a smirk on his face as he took hold of my hand. Challenging the adults. All the time he was staring at Jans legs which were jutting out from what for her was a very short skirt, so short you could see her panties as her legs were slightly open. I wish Jan would wear shorter skirts more often as she has great legs, I'm jealous of her in that way.
"Not gone all the way then?" from Mum.
"NO," from both Luke and I, then, "No, Not yet," from Luke, he was pushing things here.
"So you want to?"
A long pause as Luke and I looked at each other, then a small nod and smile between us, "Yes, we do," I whispered.
"Looks like you two have some competition from our kids and this thing seems to run in the family," said Mum to Dad and Jan.
What the hell did that statement mean? I was soon about to find out.
"You know what you're wanting isn't normal, no, not normal but not conventional, but John and Jan have been doing the same since just after you two were born, and at times I join in, more to please Jan, than anything else," said Mum. "You know you two were conceived naturally don't you, John wasn't a donor, that was an arrangement between all three of us, then just after, I had you two John and Jan got together."
Luke and I looked at each other in amazement. That was news to both of us as we thought John had only been a donor, not that he and Mum had actually had sex together. We thought that Mum hated the idea of sex with a man.
"You sure you want to get together, once you do there's no going back?" from Jan.
"Yes." Again from both Luke and I, both more forcefully and brave now.
"Ok, Lexi, get a shower and find something sexy to wear, if you can't find anything, look in my right-hand wardrobe, and choose something from there, but sexy not kinky, then stay in my bedroom, that's Jan and my present to you."
