Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/4923694.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      Gravity_Falls
  Relationship:
      Bill_Cipher/Dipper_Pines
  Character:
      Bill_Cipher, Dipper_Pines
  Additional Tags:
      Menstruation_Kink, Cunnilingus, Trans_Male_Character, Human_Bill_Cipher,
      Gender_Dysphoria, Suicidal_Thoughts, Older_Dipper_Pines
  Series:
      Part 5 of The_Demon_Had_a_Spell_on_Me
  Stats:
      Published: 2015-10-03 Words: 2338
****** I Wanna Save You From Your Sorrow ******
by eatitnerds
Summary
     Dipper lay sprawled across his mattress, limbs dangling over the
     sides, sheets and thin cotton blanket wadded up between his legs.
     Sweat dripped down from his forehead, skating along his cheek,
     pooling down in the hollow where neck met collarbone. The fan set up
     on a pile of books beside his bed spun fast and loud on high, but the
     A/C in the Shack had been malfunctioning for days, Soos had yet to
     return from his visit to Melody, and Dipper was aching for another
     reason entirely.
Notes
     Recently I read a fic with a trans boy getting eating out on his
     period and I went "well hellOOO THERE" to my new kink. This is
     definitely an au and I've put a bit of thought into the progression
     of things but even the short version is annoyingly long, so take this
     as you will and i might flesh it out in the future... Same universe
     as my fic "Vesuvius Oh Be Kind," that's for sure.
     More detailed warnings: underage (Dippindot is 16), discussion of
     gender dysphoria, discussion of suicidal thoughts, active inclusion
     of a trans boy's breasts in sexual activity (I'm warning for this bc
     I've only read fics w/dipper being like "no don't even touch my
     binder" and I guess that's a thing for some guys tho it isn't for me
     personally)
     This ended up being really fucking tender instead of the Gross Porn I
     set out to write. Also, I've read it over about six times, but it
     hasn't actually been beta'ed, so sorry for any fuckups I managed to
     miss.
See the end of the work for more notes
Dipper lay sprawled across his mattress, limbs dangling over the sides, sheets
and thin cotton blanket wadded up between his legs. Sweat dripped down from his
forehead, skating along his cheek, pooling down in the hollow where neck met
collarbone. The fan set up on a pile of books beside his bed spun fast and loud
on high, but the A/C in the Shack had been malfunctioning for days, Soos had
yet to return from his visit to Melody, and Dipper was aching for another
reason entirely.
The muscles in his abdomen throbbed and he moaned, low and desperate, fingers
twitching, eyes clenched, too exhausted to do more than tilt his head and suck
down a gulp of water from the bottle clenched in his hand. The low thrum of
magic crept into the room. Light glowed against his eyelids, and he opened them
reluctantly, flinching.
Bill Cipher floated above him, wearing the nightmare of sharp angles, teeth,
and darkness that he reserved for the rare date with Dipper - the ones which
would inevitably lead to Bill making Dipper howl with pleasure. “Wow, Pine
Tree. What’s eating you?” he asked, frowning down at the boy. “You’re way late
for our date, you know.”
"Go away, Bill," Dipper said, eyes flickering away from Bill's form. "I'm not
coming."
Bill considered this for a moment, scrutinizing Dipper as his skin bubbled and
contorted, leaving him in his other, less horrific form (less horrific on the
outside, at least, since almost nothing would make him give up the thin scars
that opened into gnashing mouths or golden tentacles). An irate Pine Tree was
always more likely to let him stay when he switched to this form, showing
himself to be earnest in his concern.
But tonight, even that wasn't enough. “Go away,” Dipper repeated, flinging an
arm over his eyes. “You’re too bright.”
Bill’s fingers wormed their way between Dipper’s, lifting the arm up and away.
The demon dimmed the yellow glow of his skin until it had almost disappeared,
leaving him strangely incandescent, skin like red clay casting a calm, eerie
light over the boy beneath him. Thankfully, it no longer hurt for Dipper to
look at him. “Better?”
“Yeah. Better.”
"May I stay?"
Dipper huffed. "Fine."
“Good. Now, will you tell me what’s wrong with your frail human body?” He
trailed the fingertips of his free hand down Dipper’s bare chest. “You’re not
usually this... wet.”
Now it was Dipper’s turn to frown. “I’m not wet, Bill, I’m sweaty. Don’t act
like you don’t know what sweat is.”
Bill laughed, high and echoing throughout the attic bedroom. “Please, Pinetree!
I don’t bother to remember your fluids unless I want them in my mouths.
Although...” He dipped his head down and lapped at Dipper’s flushed skin,
moving carefully across Dipper’s collarbone. Another cramp seized the boy, made
his face crumple in pain. He groaned and pushed at Bill’s shoulder, making the
demon float upwards a foot or so - he couldn’t go far with their hands still
entwined. Bill licked his lips. “You taste different,” he said.
“I do not,” Dipper ground out from between clenched teeth. “I taste just like I
- ah - always do.”
“As a fine connoisseur of your body, I think my expert opinion outweighs yours.
You’re a novice at best in the fine art of tasting yourself.” He wiggled his
eyebrows. “Also, I have way more tongues than you. Want me to use them all at
once, just to make sure?”
This time Dipper groaned in exasperation rather than pain. “No, Bill, I don’t.”
“Then what can I do for you, Pine Tree? I’m at your service. Just say the word
and I”ll... I’ll...” He trailed off, eyes flickering over Dipper’s form, pupils
blowing wide. “Are you...” He inhaled deeply, licked his lips. “Are you
bleeding?”
“What,” Dipper squeaked, “no!”
“You’re such a bad liar, darling,” Bill cooed. His eyes shifted in and out of
focus as he tried to concentrate. The scent of Dipper's blood was tantalizing
enough when the boy was cut or bruised by some creature, but this - this
smelled different, cleaner, even more enticing than usual. “I should... take
you to a human doctor, shouldn’t I? If you’re bleeding so much I can...” He
didn't finish the sentence. He could practically taste Dipper's scent on his
tongue.
"Fuck, no, Bill, no, I don't need to go to a doctor. This is -" He let out a
deep sigh, choking off the sob that threatened to leap out of him. "This is
normal. It happens once a month."
"Oh," Bill breathed, suddenly understanding.
"Yeah," Dipper said in a toneless voice. "Will you go, now? Please?"
"No," said Bill. He cupped Dipper's cheek in one wonderfully cold hand and
kissed him soft and careful, just the coolness of his skin, his mouth, making
Dipper's toes curl. "But I don't think you really want me to," Bill murmured
into the teenager's mouth. "So why don't you talk to me instead?" He settled
against Dipper's body, pressing himself to Dipper's skin without actually
letting the weight of himself press the boy into the mattress. He began to kiss
and nibble at Dipper's jawline, coaxing gently, afraid to prod any further than
he already had.
Dipper screwed his eyes shut. "It makes me feel so awful," he admitted,
expecting for some reason that Bill would respond with laughter. But the demon
remained blissfully silent, dragged his nails down Dipper's arms, breathed cool
and moist onto Dipper's neck. Dipper gestured weakly towards his crotch, where
he could feel the blood oozing out of him. "It makes me feel like I'm not a
man." When had his voice dropped to a whisper? He could hardly hear himself
speak, though of course Bill couldn't have missed it, not with his hyper-
sensitive hearing.
"My parents still want me to be a girl, you know, they still think it's some
kind of phase, that I'll wake up one morning and want to be just like Mabel,"
he sucked in a breath, held it, wished desperately that he couldn't feel the
tears welling up in his eyes, "I hate living like this. I think - I think it
would be easier if I - if I just -" The sob he had been holding back burst out
of him, and the tears rolled hot and shameful down his cheeks. "If I just
killed myself, so I didn't have to do this anymore."
"Oh, Pine Tree." Bill kissed away one, two, three tears and they didn't stop
coming. "My sweet, perfect Pine Tree." He kissed Dipper hard, digging his
blunted nails into the yielding pink flesh of the boy's shoulders. "You are
such a wonderful boy," he said when he drew away. "Do you know that, Pine Tree?
You're wonderful, every last bit of you." Dipper shook and cried and kept his
eyes shut tight as Bill touched him, fingertips gliding across his chest,
cupping his little breasts and gingerly stroking his nipples. "Gorgeous boy,"
he purred, "darling boy. Won't you let me take away some of the pain?" Dipper
nodded jerkily, muscles drawn tight, desperate to feel something other than the
despair that threatened to consume him. "You're sure?" That earned Bill an
"mmhm." It was enough. He pressed a feather-light kiss to each of Dipper's
eyelids, then drew back, straddling Dipper's hips properly and letting his
weight settle like an anchor over the boy's hips.
For a few minutes, Bill only stroked and kissed at Dipper's breasts, at the
little paunch of his belly, at his slight love handles, murmuring praise all
the while. When at last some of the tension had drained from Dipper's little
body, he lifted his hips up and away, hooked his thumbs into the waistband of
the human's boxers, and looked up at that glowing, tear bright face with
curiosity. Without opening his eyes, Dipper shuddered, quiet but not
protesting, lifting his hips ever so slightly to help Bill pull them down and
away. Bill breathed deeply, the moist, coppery scent of Dipper intensifying,
making him thrum with an excitement that he tempered for the sake of Dipper's
sadness. He laid his hands lightly atop the forest green panties that clad
Dipper's hips, looking up at Dipper's still-closed face.
"Dipper," he said, voice quiet and serious enough to make Dipper pry open his
eyes. "Is this too much?" The sight of Dipper's red-rimmed eyes made Bill's
stomach roll with rage, made his mind slip for a second away from the sight and
scent and feeling of Dipper beneath him to contemplate just what horrors he
would visit upon Mr. and Mrs. Pines to punish them for upsetting his boy. He
would, no doubt, have to dredge up some of the worst nightmares he had ever
considered. Dipper Pines belonged to him and him alone; his to cherish and his
to wound at his leisure (though he would never, could never bear to make the
boy suffer, not again, not after all the pain he had caused the human in years
past), and no one else's. It would be lovely, it would be -
But Dipper had spoken, and Bill's brief lapse had made him miss it. He smiled
warmly at Dipper. "What was that, darling?" he asked.
"Kiss me first," Dipper repeated in a shaky voice, ever patient with Bill's
wandering mind, stretching his arms up to pull his demon closer. Bill obliged,
sinking into Dipper's embrace, tasting the salt on his soft pink lips. He
fondled the wide hips of which Dipper was so embarrassed and Bill was so
enamored, and pulled out of the kiss to nip playfully at the line of Dipper's
jaw.
He dragged Dipper's panties down, down, down with a tantalizing slowness,
scratching Dipper's fuzz-covered legs with his nails as he went. He tugged them
over Dipper's feet and tossed them blindly to the floor.
Dipper shivered at the way Bill looked at him, as though he were something the
demon wanted to devour. He smiled weakly; he hadn't stopped crying. Once more,
Bill laced the fingers of one hand with Dipper's and nudged Dipper's thighs
apart with the other.
The breath that Bill sucked into his lungs seemed to Dipper to drag on forever.
Bill's eyes slid shut and his nostrils flared and Dipper squirmed in
anticipation. Then those eyes snapped open, bright as stars and wanting, and he
dropped to his elbows, settling himself with an ecstatic grin between Dipper's
legs. He opened the folds of Dipper's sex slowly, thumb and forefinger stroking
the hot, moist skin for a long moment before dipping his thumb down first to
circle Dipper's clit, then to dip just barely into Dipper's pink, bloody cunt.
Bill looked up at Dipper, and with their eyes locked together he withdrew his
thumb from the boy's warmth and popped it into his mouth, moaning against
Dipper's thighs. A hot pulse of want shot through Dipper, his body a bedlam of
emotion with tears still streaming steadily down his face, and he twisted the
fingers of his free hand in Bill's hair, pushing the demon down to meet the
upward cant of his hips. Bill obliged, kissing and licking while his fingers
flitted about, teasing, never quite giving Dipper what he wanted, what he
needed, he - well, he couldn't say what he needed, exactly, but he certainly
wanted this, wanted Bill cool and attentive and hungry against him.
Suddenly, before Dipper had a chance to protest, Bill seized the boy's hips and
hoisted him up, sliding to sit with Dipper between his spread legs, hooking
Dipper's knees over broad shoulders. Bill smiled down wickedly at Dipper's
flushed, startled face and buried himself in the folds of Dipper's cunt,
teasing no longer. He lapped and sucked and pressed one finger, then two,
within - Dipper shuddered and keened with pleasure, back arching, as Bill moved
achingly slowly inside of him. Dipper squeezed down hard on Bill's hand,
kneading at one breast with the other, panting open-mouthed as the tension in
his groin built higher and higher.
By now, Bill's face was smeared with Dipper, blood and fluids shining on his
skin. He began to moan, the vibrations sending thrills of pleasure up Dipper's
spine. He was close, so close, his cunt fluttering weakly around Bill's pumping
fingers, his clit throbbing, back arching, muscles clenching, pinching at one
nipple, he hit his peak with a strangled cry. Bill kept at his ministrations
until Dipper, hypersensitive and shivering, pulled him away by his mane of
black hair.
Bill slid up Dipper's trembling body to kiss him, licking the coppery taste of
his own blood and juices into his mouth. He made a weak attempt at shoving the
demon away, but he abandoned it in seconds, groaning at the unmistakable taste
of Bill beneath it all.
Satisfied with his work, Bill moved away smiling to settle down beside Dipper
on the bed, pulling the boy to curl up in his arms. "Dipper," he said quietly.
He tangled his fingers up with Dipper's once more, wishing he could touch every
bit of the boy, inside and out, pump enough adoration into that fragile human
heart to keep him forever from pain, to make his soul as thick and resilient as
Bill's own. "Mason. My darling boy."
"Bill," Dipper murmured in response, barely registering the rare use of his
chosen name, eyelids already heavy with the exhaustion of tears and orgasm.
"Thank you."
If it would have made a difference, Bill would have said that it wasn't enough,
that it was nothing, that he wouldn't deserve Dipper's thanks until he could
save the boy from the churning darkness of the world outside Gravity Falls and
wrap Dipper up in the shadowy safety of his own arms.
Instead, he pressed a kissed to the shell of Dipper's ear, and made sure his
voice was the last thing on Dipper's mind as the boy slid into the shining
dreams that Bill had already prepared for him. "Anything for you, Pine Tree."
End Notes
     I read someone's headcanon about Dipper's real name being Mason and I
     fucking love it, so yeah, as far as I'm concerned, that's his name.
     (A name he chose for himself in this au, obviously.)
     Come talk to me on Tumblr under eatitnerds!
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