
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4661139.
  Rating:
      Explicit
  Archive Warning:
      Choose_Not_To_Use_Archive_Warnings, Underage
  Category:
      F/M, M/M, Multi
  Fandom:
      Infernal_Devices_Series_-_Cassandra_Clare
  Relationship:
      Jem_Carstairs/Tessa_Gray/Will_Herondale
  Character:
      Jem_Carstairs, Will_Herondale, Tessa_Gray
  Additional Tags:
      Aphrodisiacs, Anal_Sex, Voyeurism, Exhibitionism
  Series:
      Part 2 of Nocturnal_Lovers_Series
  Stats:
      Published: 2015-08-26 Words: 3506
****** The Aphrodisiac ******
by CaptainParisStarr
Summary
     Tessa hears strange noises coming from Jem's room late one night.
     When she goes to investigate, nothing goes as planned.
“Tessa, no! Don't step there!” Jem's voice rang out too late, as Tessa's foot
landed in the puddle of demon-slime coating his bedroom floor.
 
“What is this? And... What are you doing?” Even as she spoke, she could feel
her body heat from within; the same feeling she had experienced a week earlier
while in Jem's bed. Unbidden, the memory of what they had done that night rose
to the front of her mind as she gazed in awe at Jem and at Will.
 
Will was sitting on the floor, his back resting against Jem's bed, but that's
not what had caught Tessa's attention. No, her eyes were locked on his bare
hips, for his pants had been push down to the middle of his thighs, though she
could not see anything more, for Jem was lying across his lap, covering his
parabatai's partial nudity.
 
“Tessa, please just leave. You don't... No, you can't know what is happening
here. Tessa...” But even as Jem pleaded with her, he knew it was too late, for
the slime she had stepped in was a potent aphrodisiac that was already coursing
through his own veins, and through Will's. Even so, he knew that if Tessa
stayed, then her virtue, and her virginity, were both in grave danger.
 
“I...” Tessa shook her head as if to clear it, and found herself moving closer
to the boys instead of retreating from the room.
 
Then she fell to her knees, the slime soaking into the hem of her nightgown.
How long she stayed like that she did not know, for time had lost all meaning
for her. She only knew that some time later she felt male hands on her, lifting
her up onto the bed. Then a hot mouth was on hers, kissing her, the connected
tongue delving deep, even as a second set of lips kissed her throat and neck
from behind.
 
“Tessa, no, this isn't proper...” Jem whispered breathlessly as he pulled away,
his silver hair obscuring her vision for a long moment as he lingered within
kissing distance. Behind her, Will moved lower, kissing down her back through
the thin fabric of the nightgown she was wearing. The dressing gown she had
been wearing when she entered the room was long gone, abandoned beside the
thankfully closed door.
 
“I don't care.” Finally finding her voice, she whispered those three words as
she pulled Jem back down for another searing kiss, needing the contact to cool
her overheated body.
 
Hands tore at her clothes, and she barely noticed as her nightgown was cast
away, leaving her nude upon the bed, as two sets of hungry eyes gazed down at
her. Then the contact was gone, and she opened eyes she had not realized were
closed in time to see something that caused her jaw to drop.
 
Will and Jem were kissing each other. Having never known that boys could feel
such passion for another as male as they themselves were, she watched in awe as
a fresh wave of arousal coursed though her. Will's hands tore at Jem's clothing
as Jem's wrapped around Will's neck, and the organ standing proudly between
Will's legs. Something about the scene disturbed her, as though she was gazing
upon something forbidden, though she could not think of why or how, not just
them. Then her breath caught in her throat once again as she gazed for the
first time upon male anatomy, and the sight of Will's size made her shudder, in
fear and anticipation.
 
The sound, though unheard by her ears, was loud enough to remind Will and Jem
that they had an audience, and both crawled back to her after shedding the
remainder of their clothing.
 
“Tessa...” Jem's eyes locked on hers, as she willingly let him lay his body
down on top of hers. Then his eyes flicked over to Will's, looking for
something, though she did not know what. When Jem nodded, however, she knew
that he had found what he was looking for. He pushed his weight up enough that
he was hovering over her instead of lying on top of her.
 
“Lift your legs up and apart.” Confused, she did as he asked, and he gratefully
settled his hips between her spread legs. “Just relax, Tessa. Relax and do what
comes naturally.”
 
There was a sharp pain between her legs as Jem's organ was pushed inside of
her, but it passed quickly. Settling into a gentle rhythm, Jem began to thrust
into her, slow, shallow thrusts that allowed her to get used to the sudden
intrusion before speeding the pace into quick long thrusts that hit her g-spot.
 
There were hands all over her body, in her hair, on her breasts, her stomach
and her sides, anywhere that could be reached was touched. Then a mouth was
kissing her, turning her head to the side. Will massaged her breast with one
hand, gently pinching the nipple as he kissed her, his other hand stroking
himself.
 
How long they lay like that, with her underneath and being fucked by Jem, and
Will lying beside her, kissing her and toying with her nipples, she never did
know. The only indication she had that time was passing was the growing warmth
low in her stomach. Twisting away from Will, she clung to Jem, both embracing
and fighting the warmth of her impeding orgasm.
 
When it hit, it took her by surprise as she hadn't known that such pleasure
existed Her muscles clamped tightly around Jem, startling him and milking the
seed out of him as his own release came seconds later.
 
Collapsing beside her, Jem lay panting as he tried to catch his breath. Sex had
never before been that mind blowing for him, and the fact that it had been
Tessa and not Will who had given him such pleasure left him stunned.
 
“My turn.” Tessa turned her attention to Will, as he moved to fill the void
left by Jem's absence. Kissing her deeply, Will lined himself up and slowly
pushed his much larger organ inside her. This time, the pain was almost
unbearable and she cried out.
 
“Tessa, Tessa just relax and let the pain fade.” Jem whispered into her ear,
kissing the outer shell gently as he realized what the problem was. Will was
simply too big for her to easily handle.
 
Since Will had stopped once fully sheathed within her, relaxing proved to come
be fairly easy, and soon the pain of her torn hymen had passed. Using even more
care than Jem had, Will slowly and gently began to thrust into her willing
body.
 
Unlike Jem, Will kept the pace slow, making love to her rather than just
straight up fucking her. The experience was very different, and the warmth
built slower within her, but she loved it all the same. No two lovers were the
same, she knew that now, and each man had a different style of lovemaking. Then
Will found her g-spot and everything was forgotten as she writhed beneath Will,
crying out wantonly in her passion.
 
Somewhat prepared now, she welcomed the building warmth, clinging to it and
willing it to grow into the mind blowing pleasure she had known with Jem. Once
more, she felt herself be pushed over the edge and rode out wave after wave of
orgasm with Will still riding her. What she would not find out until much, much
later in life was that, while she had experienced only a single orgasm with
Jem, Will had ridden out her orgasm, holding back his own until she had had
several. Only when he saw that Tessa was reaching her limits did he allow
himself release, spilling his seed deep with her where it mixed with Jem's.
 
Then he pulled his softening organ out of her, and pushed her into Jem's arms.
Pillowing her head only Jem's chest, Tessa closed her eyes, and, with Will
spooning her from behind, was soon fast asleep.
 
 
“Tessa! Oh God, Tessa! Wake up!” Blinking she gazed blearily into a familiar
face surrounded by black hair. Will's face. But why...
 
The memory of night before came back to her in a rush and she bolted upright,
starting Jem awake who had been sleeping beneath her.
 
“What am I... Where are my clothes?” Realizing that she was buck naked, she
grabbed at the bedclothes, hastily covering her nudity.
 
“All over my floor, along with Will's and my own, I'm afraid.” Jem gazed at the
mess his room was in as he spoke, then he slipped out of bed and carefully
strode across the room to the spot where he now kept his yin fin box, safely
out of reach of any pillows that may be tossed towards it. He would not, and
could not, risk a repeat of what had happened the first time he had had Tessa
in his bed.
 
Ogling his nude form, Tessa felt her cheeks flair with heat. “Tessa, you must
leave before anyone catches you here. It will be bad enough if I'm caught naked
in Jem's bed, but you... you shouldn't be here, at all!” There was a hint of
panic underscoring Will's words that Tessa could not place. Now that her head
was clear she knew that Will and Jem had broken the law by kissing, but that
did not seem to account for Will's panic.
 
“Will, are you okay?”
 
“I should be asking you that question, Tessa. You... are no longer a virgin,
thanks to Jem, and myself. Yes, Tessa, it was Jem who took your virginity. But
I... I encouraged him to, and then took you myself afterwards. What we did...
It should never have happened.”
 
“Will, I wanted it to happen.” Tessa tried to soothe her friend, but her
efforts were in vain.
 
“Tessa, what Will is trying to say is that what happened last night, as amazing
as it was, it could be construed as rape.” Jem returned to the bed, some color
returning to his cheeks as his medicine began to take effect.
 
“Rape?” Tessa was shocked. “How was that rape? I did nothing to fight you...”
 
“Because of the demon aphrodisiac that was pumping through your veins.” Jem
blushed and looked at the ground as he spoke, but made no attempt to shield
himself from her curious eyes. Then he turned to his wardrobe and pulled out a
spare dressing gown, tossing it towards her. “This will be big on you, but it
should be enough to get you back across the hall to your room before anyone
else sees you naked.”
 
Gratefully, she took the dressing gown and pulled it on, wrapping it tightly
around her body. “Jem, what is an aphrodisiac?”
 
“Any substance that acts to induce sexual arousal. The black slime coating the
floor is one such substance, and Will ended up covered with it as we killed a
demon last night. When you stepped in the puddle, you were also affected by it,
as we were. That is why you ended up in my bed, and why you permitted both of
us to... well, you know.” Jem's blush deepened as he whispered his explanation.
 
“There are no runes that counteract the effects, either. The only way to get an
aphrodisiac out of your system is to... well, to have sex. What we did last
night was sexual intercourse, but there are two other forms for sex. There
is...”
 
“Three other forms, not two.” Jem corrected Will, interrupting him. “There is
oral, the use of ones mouth against anothers genitals, either male or female.
Hand sex, which is similar to oral except just using hands, fingering and
touching another. The final form, which I am assuming is the one Will wanted to
omit, is anal... you may have heard of this form before, as it is also referred
to as sodomy.” Tessa started, knowing little about sodomy other than the fact
that it was a mortal sin.
 
“Sodomy?” Tessa gasped the word out.
 
“Yes. That is very similar to intercourse, and is, in fact, a form of
intercourse. Except, instead of the male penis; that's this part, by the way.”
Jem took Tessa's hand and guided it to his own penis, allowing her to gently
touch him. “Instead of it entering the female vagina, as I did with you last
night, it enters the other person anally, and therefore can be performed on a
man or a woman. It is not a sin, as you have likely been lead to believe, and
is actually very... enjoyable.” Jem looked away from her.
 
“Have you...?” Tessa broke off, uncertain what she was asking
 
“Yes, I have been sodomized. By Will.”
 
“By Will?” When did this happen, and why? “Isn't that against the law?”
 
“Yes, Tessa, it is. Which is why you must never speak of what has happened in
here. If anyone else were to suspect that I have a relationship with will of
that nature, and he with me, then...” Jem broke off, at a loss for words.
 
“It would be bad.” Will supplied, though that did not do the situation justice.
 
Tessa did not know what to say, and, unable to stay still any longer, she rose
and crossed the room to the window, and saw that it was barely dawn.
 
“What is sodomy like?”
 
“Do you really wish to find out?” Will's lips were at her ear, and she started,
unaware that he had followed her.
 
“You mean...?” She jerked away from him, fear in her eyes.
 
“No, Tessa. I'm asking if you wish to watch me sodomize Jem. We have already
broken the law, and no one is awake yet. One more round won't hurt anything.”
 
She considered Will's words, then slowly nodded and allowed him to lead her
back to the bed. “But first...” Moving fast, he untied her sash, and slipped
down between her legs, kissing her clit. The pleasure was gentle, but almost
instantaneous.
 
Shy about letting him kiss her like that, but eager to feel more of the
pleasure she had experienced the night before, she slowly feathered her hands
through his soft hair to urge him on.
 
“Jem... Uh... Can I ask you something...” She panted the words out as Will's
skilled tongue flicked across her skin.
 
“Yes, you can ask me anything, Tessa.”
 
“Why was it you, and not... not Will... who took my... my virginity... OH!”
Will found her secondary sweet spot, and Jem had to wait until Will was done
eating her out before he answered. Not that he minded, as it meant he got to
watch Tessa's beautiful body writhing under the tutoring of Will's tongue.
Having felt that same tongue against him, anally, he knew just how good Will
truly was.
 
As he saw that Tessa was growing closer to her orgasm, Jem sealed his mouth
over hers, both to kiss her and to muffle her pleasure-screams as she came.
Then he pulled away, wiping at his mouth as he considered how to answer her
question.
 
“I went first, because of my size, Tessa. Will hurt you more than I did,
correct?” Tessa nodded, and Jem continued. “Had I gone second, Will likely
would not have been able to pleasure you at all. My size is on par with the
average, as far as I can tell, but Will... Will is extremely well endowed. And,
as such, he has to be more careful with his partners than I do. I went first
to... to warm you up, so to speak, so that Will could have more freedom with
you...”
 
“And for another reason, Tessa.” Will spoke up from where he was now sitting at
the foot of the bed. “There was no guarantee that you would let both of us make
love to you, so Jem also went first because he had never been with a woman
before, and I have. I could have easily waited my turn, Tessa, even if it took
months, but Jem...” He looked away, and Tessa realized what he was not saying.
 
“You weren't certain that Jem would get another chance to be with a woman?” She
looked away from Will, and saw the confirmation of her statement in Jem's eyes.
 
“Yes, Tessa. Last night may have been my only chance to know a woman like
that.” But there was no sadness in Jem's voice as he spoke. He was reciting a
fact, nothing more, and nothing less. The fact that it was actually his second
chance went unspoken between them, neither knowing if the other had mentioned
their past dalliance to Will or not.
 
“Tessa, before we met you, neither of us was even certain that Jem was capable
of having romantic feelings for a woman, but last night proved us wrong about
that. He can love a woman, and I'm glad of that. Thank you, Tessa, for helping
us to discover that fact.” Then Will grinned mischievously, and turned towards
Jem.
 
“Will, wha-” He was cut off by Will's mouth pressing against his own, and then
Will's nude body was pinning his own to the bed.
 
“Tessa wants to learn more about sodomy, so I offered to let her watch us.”
Will whispered into Jem's ear after he broke the kiss.
 
“You're going to let her watch... That?” Jem was shocked by the idea, even as
arousal coursed through his veins.
 
“Yes. We both got a turn watching last night, why should we deprive Tessa of
hers?” Will's mouth was against the sensitive skin at the base of Jem's neck
before Jem had a chance to reply.
 
Willingly, he turned his head to give Will better access, but then Will's
weight was gone.
 
“Now, where is that bottle... ah, here it is!” Will triumphantly produced a
bottle of the oil they used as lube when he made love to Jem, which had not
happened since Tessa had moved into the room across the hall, out of fear that
she would be able to hear them. And, as last night had proved, she could.
 
Tessa had been drawn into the mess because she had heard strange sounds from
Jem's room and had decided to investigate them. Then she had stepped in the
puddle, and the rest is history.
 
Will crawled back over the bed to Jem and lifted one of Jem's legs up and over
his shoulder. Then he slid oil slicked fingers down, between Jem's lower
cheeks, and inside his anal cavity, slicking him up enough for entry. Impatient
now, he added an ample amount of oil to his hardened member, and then, in one
fluid motion, sheathed it inside of Jem.
 
Watching in amazement, Tessa watched as Will settled into a faster pace than he
had used with her, and Jem appeared to love it. He moaned and writhed under
Will, clawing at Will's back and shoulders as he urged his lover to go harder
and deeper, which Will complied.
 
Without conscious thought, one of her hands slipped between her legs and found
the sensitive nub that Will had laved attention on just moments before. Her
clitoris, though she did not yet know that name, only that it produced jolts of
pleasure. Though what she was seeing was illegal, it caused fresh sparks of
arousal to course through her. Or maybe it was because what they were doing was
sinful, and forbidden, that she also found it to be beautiful, watching the two
young men she was closest to join their bodies in an attempt to become one.
Though, really, they already were one. Jem completed Will and Will completed
Jem. They were soul mates, in the truest sense of the term.
 
When Jem began touching himself, stroking the organ that had given her her
first taste of true pleasure the night before, Tessa's pace on her clit
increased. But, her presence there was not forgotten by her male friends, and
Jem's eyes locked with hers as he came, his stomach painted with long, ropy
streams of cum. Will followed suit, coating Jem's insides with his seed.
 
Then he surprised both Jem and Tessa by leaning in and kissing Jem tenderly,
like he was in love with Jem. But Tessa knew that that was impossible; two men
could not fall in love with each other... Could they? Choosing not to ask, she
instead tied the sash of the robe Jem was lending her back around her waist.
 
Early morning light was filtering in through the curtains, and Tessa slipped
out of Jem's bed for the final time that day. Before she could reach the door,
she was stopped.
 
“Tessa, you are welcome to join us anytime you wish.”
 
“There... won't be any issues with jealousy?”
 
Both boys looked at each other, then laughed.
 
“No Tessa, no. If there is one thing Jem and I learned last night, it is that
we share very well.” Will's laughter echoed through the room as Tessa slipped
out of the room and crossed the hall, closing her door softly behind her.
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!
