Note: This story was dynamically reformatted for online reading convenience.
 
 Sister-in-law - part 3 Mff

   (after all the fun of the younger sister-in-law, now the 18 year-old
joins in)

   I could not believe the two weeks of extreme fun that I'd just enjoyed
while my wife, Paula's, 16 year-old sister was staying with us.  My balls
are now totally drained and I have that delicious ache that goes with
enjoying so much pussy that I was gasping for a rest.  The fun thing had
been that, while my wife was allowing me to enjoy her sister, Jenny, (at
least, most of the time!), she was also demanding, if that's the right
word, her normal sexual needs from me too.  So, if I hadn't already cum 3
or 4 times in a day with her sister, Paula would be sure to exhaust the
rest of my hard-worked for cum before allowing me to sleep.  Not that I
objected.  It just meant that I had to work really hard to satisfy her. 
This gave Paula even more time to orgasm than usual, which at first made
her more satisfied, but later made her even hungrier for me.  I just wished
I had access to Viagra, although so far I'd been able to maintain a good
hard-on whenever I needed to.  The stimulation provided by these two
gorgeous girls was extreme.

   In some ways, I was glad when Jenny had to return to her parents for the
following school term.  We had a frantic final coupling in the car on the
way to the station.  It was really the only way to end our relationship
happily.  She promised to be back for the next holidays, perhaps with a
friend.  OMG, I thought, that would be incredible.  Somehow, I managed to
let her go, despite the lust that had already made my cock hard again after
our last blast.

   When Paula got back from work that evening, she subjected me to several
hours of delicious sexual fun, as she was so horny.  How could I refuse
such a dream-girl?

   This heightened level of sexual activity between us continued throughout
the following term, with Paula being the horniest that I have ever known.
We did not miss a day without sex in some form or another and her orgasms
were becoming even stronger and more intense each day.

   On e-mail, I was keeping in touch with Jenny while she was at school,
reminiscing over our fun times and sometimes, in the evenings when Paula
was working late, we'd go on webcam together and play until Jenny had cum
as often as she needed to, which was sometimes 3 or 4 times.  I loved
watching her and building my own orgasms slowly, without actually erupting
for her.  She knew I was saving my load for Paula, and she never
complained. When she was unable to chat with me, such as at the weekends,
she would hold herself back, so she told me, waiting for me to watch her
each Monday.

   I learned that Jenny would be bringing a friend with her for the next
holidays.  She even showed me photos of her friend.  The two girls looked
quite alike, both with stunning bodies.  She told me the older girl was 18
and very shy.  I asked Paula whether she knew the girl, but she said 'no,
obviously just a friend from school."

   I tried to keep my excitement under control as it got closer to the end
of term again.  Just as I was beginning to get hard about Jenny almost
every moment, Paula suddenly announced that she had been asked to go away
to a conference during the holiday - for 4 days, "did I mind?" she asked.

   "You know Jenny's visiting again?  And she's said she's bringing a
friend?" I asked, at the same time extremely aroused and worried too. 
Worried that I might not be able to handle 2 girls in Paula's absence.

   "You'll be OK, or would you like me to suggest to Jenny that she doesn't
come over this time?" asked Paula with a wicked look.

   "I guess I'll manage.  We'll have to be careful with our phone calls
though.  Don't want them to catch me with my hand on my cock!" I laughed.

   "I'll be good," she giggled.

   That was as far as Paula and I discussed it, but I did let Jenny know
during one of our chats.  She was delirious with pleasure and came so often
that night while I watched.  She said that Paula hadn't told her yet and
wondered whether my wicked wife was intending to keep it from her until she
actually arrived at our house.

   The last week of the school term went so slowly - I thought it was never
going to end.  Not that I wasn't getting more than my fair share of
delicious wet pussy.  Paula was extremely horny all the time and we were
not getting much sleep, or doing anything else apart from enjoying sex. 
She was leaving on the Saturday and Jenny would arrive the Friday morning.

   This time, Paula picked Jenny up from the station and had already told
her sister that she had to go away to the conference.  How Jenny could have
hidden her excitement, I'd no idea.  She greeted me wit a simple kiss on
the cheek, but I could feel her trembling.

   "Cindy is coming tomorrow afternoon," she announced.  "You can pick her
up at the same time as you take Paula to the station.  That would be so
cool!"

   I agreed and settled down to enjoy the few hours of having the two
sisters together.  I still couldn't get used to the fact that they were
sisters, yet they were so alike - just separated by 10 years.  I was very
aware of Jenny following me everywhere with her eyes and I guess I was
sporting a bulging hard-on the whole day and evening.  Paula noticed and
kept suggesting to me that we could pop off to the bedroom to have sex
again.  I could see that she was getting extremely horny but I wanted to
keep our final act together until the next morning, if possible.

   Jenny was clear;y excited, but also very sleepy at the end of term.  She
went to bed quite early.  Paula looked at me as soon as she'd gone.

   "Are you sure you're going to be alright with Jenny?" she asked.  "She's
been looking at you very strangely."

   "Has she?" I replied.  "I didn't notice.  I could see that she was very
tired though."

   "How are you going to cope without regular pussy?" Paula asked, taking
my hand and pulling me to the bedroom.

   She stripped off immediately, pulled out my cock and pushed me onto the
bed.  For the next 2 hours, I was basically raped!  It was delicious.  She
sat on my cock and rode me incessantly for over an hour, during which time
she came so many times, screaming and writhing about like a wildcat.  When
I finally had to cum, she sat quietly as I pushed my cock deep up inside
her pussy and groaned noisily as I felt my cum spurting out into her.

   But that wasn't enough.  She wanted me to lick her, then play with most
of her sex toys until she'd cum numerous more times.

   "Although I'll be taking some of them with me, I'll miss your hands and
your cock like crazy," she giggled after she'd almost exhausted herself
with orgasms.

   When she finally seemed to calm down, we were able to sleep a little. 
But I woke up with my cock in her hot mouth and she made me cum twice more
before we got up for breakfast.

   "You were very noisy last night - and this morning!" complained Jenny
when she joined us in the dining room.

   "Sorry, Sis, Can't leave him here all horny, can I?" said Paula,
happily.

   Jenny grinned at me, but said nothing.

   "Will you be alright here while I take Paula to the station?" I asked
her gently.

   "Sure.  No problems.  But don't forget to wait about 30 minutes for
Cindy's train to arrive.  You'll know her as she'll still be in school
uniform."

   Paula gathered up her things and took her small suitcase out to the car.

   "See you soon!" giggled Jenny, impishly as I waved goodbye.

   I kissed Paula longingly at the station, feeling her hungry body
reacting to mine again.  Our kisses were deep and passionate.  My cock
erected yet again and she squeezed it hard before she finally went to the
train.

   I waited in the car park for 30 minutes, then 40 minutes.  Then my cell
phone rang.  It was Jenny.

   "Hi.  Cindy's train has been delayed.  Do you want to come back here and
wait?" she asked softly.

   "How much longer will I have to wait here?" I asked her.

   "Perhaps another hour!" replied the young girl.

   "Not worth me coming back then!" I giggled.  "No time to do anything, is
there?"

   "Awwwww!" cried Jenny, obviously disappointed.

   If it had been only 10 minutes to home, I would definitely gone back,
but the 20 minutes drive as just too far.  I knew Jenny would understand;
she was just being wicked.

   "Maybe if you got dinner ready, that would keep your mind busy?" I
suggested.

   "Are you saying you don't want me," the young girl asked, worried.

   "Want you?" I cried.  "Of course I want you, but if I came back now,
we'd not want to break off before tomorrow morning, would we?"

   "No!" agreed the gorgeous sister-in-law.  "I guess not."

   "I remember your hunger from last time!" I giggled.

   "Me too.  It's not been the same with the boys.  I miss your big hard
cock."

   "Shhhhhh!" I cautioned.  "Save yourself.  I'll be back soon,"



   being continued...
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