I remember that it was a Monday morning when Jocelyn kissed me and got up to go to work.  I had to work both Saturday and Sunday so I had Monday and Wednesday off work.  I tried to get her to return to bed and throw a sicky, but she reminded me that she was up for promotion and was keen to impress and throwing a sicky wouldn’t hep her case.  I rolled over and drifted off to sleep.

I found myself in that twilight zone where your between sleep and full consciousness.  I could feel someone crawling up under the duvet and then sucking my cock and naturally assumed that my girlfriend Jocelyn had for some reason changed her mind and returned.  She was doing a damn good job and I could hear myself going “Mmmmm” several times as my cock spread some really nice feeling through me as it prepared to blow my load in her mouth.

Then I was coming nice and hard and as I lay enjoying the afterglow of one of the most fantastic blow job, my cum was quickly swallowed and her mouth renewed it’s efforts to keep me hard ready for another blow job or possibly a good fucking.  I lay there with my eyes closed as she remained under the duvet sucking my cock.  I think I went just a little soft before she managed to restore it to full hardness.  I remember making several “Mmmmm’s” as my cock was sucked to full hardness again.  Then she moved up the bed and straddled me.

I was still enjoying the sensations with my eyes shut as I felt my cock being sucked into a tight pussy.  It felt fantastic as I reached up to grab Jocelyn’s gorgeous plump tits to find that the tits I was holding were much smaller than Jocelyn’s.   My eyes snapped open to see Leslie sat on my cock as she started riding me.  Leslie is Jocelyn’s younger sister and whilst I found her fun and a little bit sexy I had never made any advances towards her.  I tried to push her off but Leslie pushed back and slammed back down on my cock with my balls now right against and touching her little arse.

I was asking Leslie what the hell she thought she was doing.  Leslie had stayed with us the last four nights as she was going through a bad time with her parents, and at nineteen had nowhere else to stay so Jocelyn and I had agreed she could stay with us for a while.  Jocelyn was twenty four and I was twenty six at this time and we had been living together for the last four years.  Leslie told me that she had listened to us making love the last four nights and she was missing her boyfriend, and I was going to have to do it to relieve the inching in her pussy, that was our fault in the first place, for making love in earshot of her.  I tired again to push her off me but was surprised just how strong she was as she pinned me down and continued riding me.

By this time, it felt so good this young sexy woman riding my cock that I didn’t fight her that hard, and eventually just laid back enjoying Leslie riding up and down my cock.  I was soon warning her that I was close to coming, wondering if she would pull off of me, not wanting to get pregnant. Instead she told me she was also close and just keep going a while longer.  Leslie groaned loudly and collapsed on top of me just before I started coming in her pussy.   I was a short while before either of us could move and I rolled us both over and pulled my limp cock from her hot little pussy.

I felt guilty at having just come in my girlfriend’s sister’s pussy, but Leslie was telling me that I had fucked her nicely and that would do for now, but I might have to do it again shortly.  I told Leslie that it wasn’t right as I was in a relationship with her sister.  Leslie just laughed and said what her sister didn’t know, wouldn’t hurt her as she snuggled back against me and took hold of my sticky wet limp cock.

I couldn’t help it my cock started to swell again.  I tried to block my mind from what Leslie was doing, but a sexy young woman playing with your cock, even if it is your girlfriends sister, tugging on your cock, I defy any normal male from getting hard.  Leslie was also pushing her small pointed tits at my face and I weakened and opened my mouth and accepted a stiff little nipple into my mouth. 

It wasn’t long before my cock was at full hardness and length again, and I was so worked up I needed to fuck, and as Leslie was the only woman with me I rolled her onto her back and opened her legs and climbed inside them.  Leslie made no attempt at stopping me in fact as my cock penetrated her pussy her legs wrapped around me, as if trapping me, and as I started to pump her pussy Leslie was pushing back and telling me that she wanted it deep and hard.

Deep and hard was exactly what she got.  I pounded her harder than I had ever pounded a pussy before and Leslie just loved it and groaned constantly telling me to go harder and deeper.  Eventually she tensed up and came and I managed a few more thrusts before I came.  Yes in her pussy again.  We rested for about half an hour before Leslie went to her own room.  I assumed to dress.  I dressed and went downstairs to get some breakfast.  Leslie joined me but the nearest to dressed was her having put on a lacy bra and panties.  Seeing that sexy little arse wiggling around my kitchen as she got herself some cornflakes and milk did nothing to stop my cock from stiffening up again.

I resisted jumping on her and told her this had to stop as it would ruin my relationship with her sister if Jocelyn ever found out.  Leslie was far from apologetic and just said that she wouldn’t tell if I didn’t.  I had a few errands to run and was glad to get out of my own house so I could cool down, but the visions of her making love and wiggling around my kitchen just kept flooding my head.  Eventually I had little option but to go home.  I had decided that if I collected Leslie and took her out for lunch and applied her with drink, she would doze the rest of the afternoon and once Jocelyn was home I would be safe from Leslie.

We did go out to a nice pub called The Waters Meet.  We sat outside looking over the river as we ate our lunch and I kept filling Leslie’s glass with wine from the bottle I had purchased.  Leslie was now on her fourth glass and I had barley sipped any as I was driving.  As she turned away I quickly poured the rest of mine into her glass and told her to drink up as the weather looked like turning and we didn’t want to get wet.  Leslie gulped it down and took my arm as I led her to the car.  I was hoping like babies do that the purr of the engine and the motion would put her to sleep on the ride home.

Far from it.   We had barely started off down the road and Leslie’s hand was in my lap trying to get my zip down.  Instead of making Leslie tired and sleepy it had made her randy.  I kept telling her to stop and push her hand away as I tried to drive but she was winning the battle and my cock was now out of my trousers and I couldn’t stop her from ducking down and sucking my cock yet again.  She was damn good at it, in fact better than her older sister.  I warned her that if she kept on I would come.  Leslie stopped sucking as she joked that another limp dick wouldn’t be of any use to her once I came.

True to her word, the moment we were indoors she was tearing at my clothes.  It’s hard to be taken seriously when you say no and your cock is dangling out of your trousers.  Leslie was quickly back on her knees sucking me back to full size.  I couldn’t help myself as I grabbed Leslie and pushed her face down on the dining table and lifted her short skirt and pulling her frilly panties down to her knees.  Leslie gasped loudly as I stuffed as much cock as I could into her tight little pussy in one go and then took several more runs at her until I was fully home. 

By this point Leslie was thrusting back at my cock to get as much as she could in her.  I couldn’t remember a time, in recent times, where I had wanted a rough fuck as much as I did at this time.  Leslie gasped and groaned all the way to her orgasm as I rammed at her before her tight pussy pulsing on my cock causing me to come deep and hard in her pussy.  Now the alcohol set in, and as she recovered and relaxed she just grinned at me and told me it was our best yet, then her eyes glazed over.  I could hardly leave her spread across the dining table with her panties around her knees as she started snoring.  I lifted her and carried her up to her room and laid her on her bed.  I took her blouse and skirt off along with her white socks and shoes.  I tried to pull her panties back in place but had to eventually give up on that.

Looking at her laid there I was tempted to touch and play with her, but remembering she was my girlfriends younger sister I resisted and covered her over with the duvet.   It was several hours when Jocelyn returned home and asked where Leslie was and had she been good.  Thoughts of fucking her flashed through my mind as I told her that she had been good, but probably drank just a little too much wine at lunch time and had slept all the rest of the afternoon.  Jocelyn went up to check on her sister and returned to tell me she was still asleep.  We ate late that evening when Leslie finally woke and joined us.

That night Jocelyn wanted sex and I struggled to get hard but when I did all I could think about was Leslie’s sweet arse and pussy as I fucked Jocelyn.  It was about a week later when I was again left with Leslie for around three hours while my wife was out with her friends.  I couldn’t get Leslie out of her clothes quick enough and she looked a little shocked as I treated her roughly as I stripped her naked and then threw her on her bed and took her hard from behind.  After a rest I made love to Leslie again, but much more gently, and we kissed and cuddled as I slipped in and out her pussy as we faced each other.  Afterwards we had to clean up in case Jocelyn came home early. 

We were sat in the lounge with a film playing on the tv when Jocelyn did eventually return.  What I did learn as we sat in the lounge that Leslie was quite jealous of Jocelyn and to some degree angry with her.  Jocelyn had always treated Leslie badly as when she came along she knocked Jocelyn off of the number one slot with their parents and Leslie had resented her treatment.  I now knew why there wasn’t a lot of love between the sisters.  Leslie made it quite clear that every time she could get one over on Jocelyn she would and if that meant fucking her sister’s boyfriend she would and insisted that she intended to enjoy it every time.

We fucked two more times before Leslie returned home and made up with her parents.  Things seemed to also get better between the sisters and we are due to go on holiday with her next year.  I can already feel my cock hardening as I think about what could happen on holiday.