
Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/9672455.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/F
  Fandom:
      Supergirl_(TV_2015)
  Relationship:
      Kara_Danvers/Lena_Luthor
  Character:
      Kara_Danvers, Lena_Luthor
  Additional Tags:
      Alternate_Universe_-_High_School, Kara_meets_Lena_at_a_club_during
      summer, Smut, Shameless_Smut
  Series:
      Part 2 of Sin
  Stats:
      Published: 2017-02-12 Words: 1499
****** Sinful surprise ******
by SilentRain91
Summary
     Kara is at a club even though she's only sixteen. She meets Lena
     there, neither one of them knowing the second meeting which awaits
     them when the summer ends.
Notes
See the end of the work for notes
Kara hooks her legs around Lena’s waist and kisses her hungrily as her back
hits the wall of the stall they’re in. She didn’t think her night would spiral
into making out in the restroom of this club she isn’t even supposed to be in,
but she’s not going to complain that it is. Truthfully, she’s not supposed to
be in this club because she’s legally not old enough yet. This club doesn’t
allow people underneath twenty-one to enter, which makes sense because someone
needs to be twenty-one to drink.
She’s here because she went along with Lucy to celebrate her eighteenth
birthday and even though she wouldn’t approve of fake ID’s she couldn’t say no
to her best friend. It makes her feel giddy considering she’s only sixteen and
she got in with that fake ID. In about two months she’ll be seventeen,
somewhere in October. Her birthday has always been on the late side, often
making her the youngest of her class. Lucy had to redo a grade, which is why
they’ve been going to school together.
It’s summer vacation, though the end of her vacation is nearing. In about three
weeks school will begin again and it will be her senior year. For now she can
relax and enjoy kissing this woman she met at this club. Lena is older than
her, she can see that, but if she’d have to guess she’d say she’s about thirty
at most.
“Kara,” Lena mumbles, moving to kiss her neck.
Kara snaps out of her thoughts and lowers her legs so she can stand, not
wanting Lena to have to keep supporting her weight. The attraction between them
was pretty much instant and made her act impulsively. “Lena,” she whispers,
dazed with desire. She has kissed people before, sure, but that’s about as far
as she has gone. It doesn’t seem like a good idea to mention that she’s a
virgin, not when Lena is unbuttoning her pants.
Lena kneels down and slowly shimmies Kara’s pants down her legs, along with her
underwear. “Beautiful,” she murmurs, kissing her thighs. “Can I?” she asks, her
voice low and needy.
“Yes,” Kara whimpers, tilting her head back. “Please,” she adds. This isn’t how
she expected her first time would go, but she really wants Lena. She tangles
her hands in Lena’s hair, coaxing her closer to where she needs her the most
and usually she wouldn’t be this needy, but Rao, this wave of arousal is too
much to ignore.
Lena sucks lightly on Kara’s clit, spurred on when she hears her name being
moaned. She swirls her tongue around, tasting how wet Kara is for, which aids
to turn her on more.
“Oh yes, y-yes,” Kara moans, never having felt anything like this before. She
understands now what some people were talking about when they say how good sex
feels. “Mhmm, Lena,” she moans, closing her eyes while Lena’s tongue licks
through her folds.
Lena thrusts two fingers inside of Kara’s wet center, feeling how close she is
around her fingers. When she hears Kara moan louder, she picks her pace up,
pumping harder and deeper, curling her fingers every now and then. She teases
Kara’s clit while she moves her fingers to double the pleasure.
Kara gasps when she feels her orgasm building up and Rao, she’s so close. “Ah,
Lena… please,” she moans, feeling like her legs are going to give out.
Lena stills her movements to gaze up at Kara. “How badly do you want to come?”
she asks naughtily.
Kara whines at the loss of contact, even though she can feel that Lena’s
fingers are still inside of her. “Um… v-very badly?” she tries, unsure what to
say. She’s too shy to admit that she has no experience whatsoever.
“You’ll have to try to be a bit more vocal than that,” Lena replies, not quite
pleased yet. She flicks her tongue around Kara’s clit to encourage her to be
more vocal. What can she say? She likes it when her sexual partner is being
vocal.
Kara feels like she’s at a strong disadvantage because Lena is so good at this
while she has no idea what she’s doing. “I… I’ll try,” she promises, moaning
louder.
Lena smirks confidently when Kara moans even louder than she did before. That’s
much more like it. She continues her ministrations, flattening her tongue
against Kara’s center while she thrusts her fingers in and out.
“Ah… Lena,” Kara moans, biting her bottom lip so hard as if she’s trying to
taste her own blood. “I’m cl-close,” she breathes out. It is building and it’s
intense and it feels like she’s going to die a delicious death.
Lena pulls back, her breath close to Kara’s warm center. “I want to hear you
beg for it,” she demands, loving to be the one in control.
Kara’s jaw drops at Lena’s request and she thought she had already been begging
before. “Lena, please,” she pleads, desperately. “Please, please, please,” she
chants, like a chorus. “Please, I’m going to combust,” she whines.
Lena smiles, feeling happy to hear that Kara is listening so well and is
begging for it. She curls two fingers inside of Kara while her tongue plays
with her clit, not relenting when Kara comes, moaning her name. In fact, when
Kara comes, she picks up her pace, thrusting harder and deeper. She presses her
free hand against Kara’s stomach, below her belly button.
“Lena!” Kara cries out, toppling over into a second orgasm. She was still dazed
from her first orgasm and now she needs to come down from the second one as
well.
Lena slowly slips her fingers out of Kara and licks them clean under her
watchful eyes, amused to see Kara’s jaw drop. She stands up and opens the door
of the stall, winking at Kara. “You taste good,” she husks. “Enjoy the rest of
your night, darling.”
 
 
===============================================================================
 
 
Lena leans against her desk, arms resting on her sides while she looks out of
the window as her students trickle in. She’s new as a teacher, being twenty-
eight and having decided to give her career a spin by choosing this. Teaching
the seniors may be a challenge, though she doesn’t back away from a challenge.
“Good morning, students,” she says when she assumes they have all entered. Her
eyes widen when she spots a very familiar looking blonde in her class, the
young woman from the club, whom she thought was twenty-one and simply looked
young. Oh god, she had sex with a student.
Kara is gripping the edges of her desk, her mouth agape as she looks at Lena.
She had sex with her new teacher without knowing. Oh no, no, no.
Lena can’t believe she slept with a student who is merely a senior in high
school, meaning Kara can’t be older than seventeen. She shivers as she
remembers being between Kara’s legs and the thought of wanting to do that again
makes her shiver even more.
Kara can’t keep her eyes off of Lena during class and she knows she’s pushing
it when she unbuttons the top two buttons of her blouse, revealing her cleavage
slightly. When the class ends, she scribbles her phone number down on a piece
of paper.
Lena is stunned when Kara walks up to her, right after the other students have
left. The girl is smiling at her and is holding a piece of paper out, which she
takes.
Kara leans in for a quick peck on Lena’s lips. “Call me,” she says sweetly. “I
really I um…,” she continues, blushing. “I enjoyed having my first time with
you and maybe we could… I would like to… if you want, we could do that again
sometime.”
“I was your first?” Lena asks, shocked and suddenly she finds it impossible to
breathe. Oh god, what has she done. She should have known Kara was too young
rather than assume she just looked younger than she really is. That’s the last
time she randomly hooks up with someone.
“You were,” Kara answers, staring at her feet. “I don’t regret it,” she assures
Lena. “So um… I should go and I hope you’ll call me.”
“Kara…,” Lena whispers, hardly able to process her shock. “How… how old are
you?” she asks and she probably doesn’t want to know that because this is bad
enough already.
“Sixteen,” Kara answers with a beaming smile, but Lena isn’t smiling at all.
“Al-almost seventeen,” she adds quickly, though it doesn’t seem to help. “I
should catch up with the others,” she says, shuffling nervously on her feet.
“If you call me later I could come to your place or you could… your place would
probably be better.”
Lena feels like she needs a drink because she had sex with her student, her
sixteen year old student, who was a virgin. That’s it, now she’s really going
to hell, but oh how badly she wants to repeat that sin.  
 
End Notes
     I'll just pretend I never wrote this. I checked the underage box to
     be sure because some say the age of consent is sixteen whereas others
     would say it's eighteen.
     ***DO NOT REPOST ANY OF MY STORIES ANYWHERE EVER, I DO NOT GIVE
     PERMISSION FOR THIS***
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