Once again, thanks to all who left feedback here and to those of you who sent it privately. I hope you enjoy this next instalment. There will be a third chapter, it is in the process of being written at the moment.
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The relationship I had with twins Dave and Bill progressed quickly and after six weeks I moved in with them. As far as our parents, friends and the outside world were concerned I was dating Dave, but in actual fact I was in a relationship and having sex with both of them.
The only people who knew the true nature of our relationship were Dave and Bill's other brothers, Frank, Gerry and Tom along with their younger sister Gina and her husband Harry. They were hardly going to say anything as they were also involved in an incestuous relationship themselves, as I had discovered a few weeks before, when I had seen Frank and Gerry fucking Gina as she sucked Tom, as Harry watched them.
I had not had an opportunity to talk to Gina about what I had seen, so when she invited me over to their place for what I thought would be a 'Girlie Chat', I accepted immediately.
Unfortunately I was delayed with a meeting over running at work, and I was surprised to find that it was Harry who answered the door when I arrived. He was only wearing boxers and a tee shirt.
"I'm sorry I'm so late," I told him, as I followed him into the hallway kicking off my shoes.
"It's ok," Harry replied, "though Gina and Tom were rather impatient and very horny so they have already started."
Unsure what he meant I followed him into the sitting room, where the scene that met my eyes froze me to the spot!
There before me, stood Gina, completely naked apart from wearing a large strap on flesh coloured dildo. Kneeling in front of her equally naked was Tom, and he was attempting to suck on the dildo.
Gina saw me enter the room and winked at me, before turning her attention back to her brother.
"Come on Tom," she urged, "suck my cock."
She thrust forward, pushing the large dildo at Tom's mouth. He groaned and opened his mouth, letting his sister push the dildo in.
"Mmmm, that's it, I know how much you love sucking cock," Gina praised, stroking him on the head, "and you are such a good cocksucker too!"
I stood rooted to the spot as I watched Tom lick and suck on the dildo. I could see that his own cock was rock hard as he deep throated the dildo, he was obviously enjoying this!
I had almost forgotten about Harry, until I felt him move to stand behind me. He pressed his body against my back and spoke huskily into my ear.
"They look good together, don't they? My wife and her own brother."
I moaned and nodded, I could feel his arousal pressing into the small of my back. He slipped an arm around my waist and began to caress me through my clothes as I watched.
Gina was now holding Tom's head and fucking his mouth hard and fast, pushing the dildo deep into his throat.
"You like this don't you brother? You like it when I fuck your mouth with my cock."
Tom moaned and nodded, reaching down to give his own cock which was hard and leaking a stroke.
"I am going to fuck your arse," Gina told him, as she pulled the dildo out of his mouth. "But you know what you have to do first...don't you?"
Tom looked up at Gina, his face was flushed and his lips were swollen.
"Please Gina," he begged, "please fuck me; I want to feel your cock inside me. I need you Sis...I need your cock in my arse."
Harry's hands had now pushed my skirt up around my waist and were caressing me through my knickers. I pressed against his hand. Once again I found myself in a position where I should be disgusted at what I was seeing, but I wasn't, in fact I found it very arousing and I could feel myself getting wetter and wetter by the minute.
I could not help it, I let a small moan escape as I watched Gina position Tom over the arm of a comfy chair, then squirt lube onto her fingers and push two of them into her brother's tight arse hole. He moaned and pushed back onto them.
"Oh, god... Gina... please, fuck me," he begged.
As I continued to watch Harry's fingers pushed aside the soaking wet material of my knickers and slid up and down my wet slit. Fuck I was so aroused by what I was seeing!
"I knew this would turn you on, Helen" he whispered in my ear, "Your cunt is so hot and wet."
I moaned again as he licked my neck, his other hand undid the buttons on my blouse and the clasp of my bra. Then in one quick movement he pulled them both off me and discarded them to the floor.
Gina now started to cover the dildo with lube, I then watched as she pressed the tip of it to Tom's hole, slowly pushing it in. I heard him sigh contentedly when the dildo was completely inside him.
Oh fuck, I could not believe how much this was turning me on. I moaned as Harry moved two fingers down into my pussy and whispered in my ear once again.