Crossing the Line
Copyright© 2019 by Twren
Chapter 1
Incest Sex Story: Chapter 1 - Samantha is a smart, attractive 17 year old high-school senior who had grown up with her younger brother as her best friend. This is a story about how she came to realize her ideal mate had been living just 10 feet away from her for her entire life. Starting with the discovery of their unconventional feelings towards one another during an experiment with Ecstasy and progressing through the Holidays and on into College, Alex and Sam nurture the well of emotions and lust that grow between them
Caution: This Incest Sex Story contains strong sexual content, including mt/ft Mult Teenagers Consensual Drunk/Drugged BiSexual Heterosexual Fiction Humor School Sharing Incest Brother Sister Group Sex Cream Pie Double Penetration First Masturbation Oral Sex Petting Tit-Fucking Big Breasts Violence
As the girls were finishing up in the bathroom on this, the last day of school prior to Christmas vacation, Sam said to JoAnna “I know how it works, i’ve done it before duh ... If you’re that worried about your dad seeing them, just put it in my bag and I will bring them this weekend. Just think, 2 days from now we will be knee-deep in snow in the White Mountains, I DEFINITELY plan on being ‘one with nature’ if you know what I mean”.
Both girls giggle a little to each other and embrace as they leave for their cars, promising to talk tomorrow to finish planning the last minute details for the 3 day camping trip.
On the drive home, Sam wonders how JoAnna was able to score the dozen Ecstasy pills now sitting in one of the many pockets of her purse, but happy nonetheless that they would be able to take them once again. Having only taken X once before, she was eager to try it again, this time with a boyfriend who would be able to REALLY give her the full measure of pleasure afforded by the wonderful drug.
Pulling into the driveway of her house, Sam noticed 2 other cars there that look like rentals and thinks to herself “oh great whose come to visit this time”. As Samantha got out of the car and was grabbing her bookbag and purse, the front door to the house swings open and out comes her aunt Christine, “SAMANTHA! It’s so good to see you! You’ve really gotten taller since I saw you ... what? 3 years ago? How old are you now? 18?”
Samantha returns the hug offered by her Aunt, “Not quite Aunt Christine, only 17 for a few more months though then it’s off to Northwestern State for College”.
As the two walk arm in arm into their house, Samantha asks “So who all is here? I saw two cars out there, does that mean you brought the whole gang?”
Being from a small immediate family, Samantha was used to sharing space with her mom, dad, and younger brother Alex. It was a small but cozy 4 bedroom, 2 bathroom home but their dad had turned the 4th bedroom into a home office so there was no guest bedroom. The extended family was huge however, with her dad having 6 brothers and 3 sisters, and her mom having 5 siblings herself, it seemed like there were family house guests for every major holiday.
“Yep, the gang’s all here” Christine said as they entered the house, and both were mobbed as soon as they walked in, with the little children all clamoring for attention from their older cousin.
“Unfortunately the hotel screwed up our reservations, so we were only able to get one room tonight and will get our other one tomorrow.
With a sigh and a slight nod, Samantha understood that meant she would be bunking with her brother again tonight as her older cousins would be staying in her room, while her aunt and uncle took the smaller kids to the hotel to stay out of her parents’ hair. This was an arrangement that had been taking place since she could remember, having always lived in this house since she was a young child. It was never a problem growing up, because Alex was one of her best friends, they did everything together from exploring the woods behind their house to Christmas shopping to having the same friends.
After greeting and hugging her mother, Samantha went to drop her things off in her room and tidy up a bit. Picking up her clothes scattered on her bed and dresser, her bra hanging halfway out of the laundry basket sitting in the corner, and the variety of thongs she had left on display on her desk while she had been finalizing her outfits that morning for the camping trip starting in just 1 more day! ... Well, a day and a night, because she wasn’t technically leaving until 3AM the morning after next. Not wanting to put everything away and then have to take it out again to pack tomorrow, she decided to finish her packing right then and placed her vitamins, birth control pills, and then she brought out the First Aid kit her dad had taught her to always have on a camping trip, took the string of paper packets of tylenol, unrolled it and ripped off 5 of the individually-wrapped tylenol packets. Using a fine knife, she slit open the back of each of the packets and replaced the tylenol with the Ecstasy pills, then rolled up the square packets (that still had their perforated connection in-tact) and placed them back in the first aid kit.
While she had never been a particularly shy person, she didn’t want anyone finding her little “stash”, least of all her parents, because she was “daddy’s little girl” and she had a good relationship with them. She loved her family, and her younger brother Alex, especially. He knew she did drugs occasionally, and had even been her “designated sober” person when she tried Acid for the first time. She could count on him for anything, and the same could be said about Samantha by Alex.
At 5’1” she looked in the wall mirror at her body, admiring the 36 DD breasts that had been filling in the last few years, then running her eyes critically down her slim body to her admittedly “cute” butt, not too big, but definitely not too small, and Juuuuuuust the right amount of jiggle.
She couldn’t wait to try out the Ecstasy again, the sensations of euphoria and touch she felt at the party the last time were amazing, and she was nearly wet with the thought of being able to feel those things in such intimate ways. “UGH ... that means 2 more nights of this torture, having the pills in hand and being able to do nothing with them!”. She shut her suit case and bag, put them under her desk and left the room.
“Thanks for helping with Dinner you two...” Samantha and Alex’s Mom said to them, “ ... and thank you for sharing your room again tonight Alex, I know you had planned on having Brian over so it would be easier for you two to get to the mall to get in line for those tickets, but Christine and John weren’t expecting for the Marriott to lose their reservation.” “Its OK Mom” Alex said, “I owe Sam for the ride she gave us last time when you couldn’t do it, Brian was fine with it, we will just get there a few minutes later is all. Not a big deal”
With having 3 other cousins staying in the next room, her bedroom, and two being only 7 and the third being 8 years old, Sam wasn’t about to leave her things in her bedroom to be messed with, so she said “Hey Alex, while I change for bed and get the pull-out bed ready, can you grab my two small night-kit bags from my bedroom? I don’t want the little kids to go through them and get into anything like my birth control pills. Oh, and grab the first aid kit too” She finished with a wink.
Alex had been born almost exactly a year after Samantha, so being 16 and interested in sports, he is athletic, muscular but thin, still filling out from puberty but already standing at 5’7”. He loved his sister and had been best friends with her since he could remember. Being so close, and with these family visits always happening, he had through the course of time seen his sister in various states of undress, and she had likewise seen him as they both grew to their current states of maturity. Neither of them took it “weird”, nor did they get embarrassed any longer or try to play it off. “It happened, ok, move on its not a big deal.” was pretty much how they both thought.
They had figured out a kind of system in the last couple years since their parents had started getting all “fidgety” since she had started moving up out of her training bras into the C-cup and finally the DD 36’s she was at now. She would get the room ready, he would do any household chores she might have yet to accomplish, then they could both relax and play some video games or watch a movie. Being best friends is convenient when you already live together!
So while Alex got her bags and finished up a few things he had to do in other areas of the house, Samantha pulled the Hideabed from under the frame of Alex’s bed, unfolded and put on the fresh sheets, pulled the spare blankets off the closet shelf, and then changed into her night-clothes which were fluffy cotton red/white speckled pajama bottoms and a green thong with a and a button down flannel green/red/white snowflake shirt and red bralette.
Samantha loved the Christmas time of year and theme, her whole family knew it! Thats why she had such cute red and green lounge clothes to wear around the house. Then she got into her bed and laid back, took the TV remote off the night-stand and started flipping through Nextflix.
A few minutes later, Alex came back in with the bags, Sam motioned for him to toss her the little pink one for her birth control and said “you know, im not ‘happy’ about the issues I have (referencing Ovarian cysts she had been diagnosed with as a young teen), but ive been looking for a silver lining and I guess being forced to take these birth control pills for the hormone imbalance is the perfect excuse, so I dont have to go through what JoAnna is and have that awkward conversation with mom and dad.” Alex nodded and said “Yeah I heard you two talking about it the other day, she sounded like someone slapped her puppy” he finished with a chuckle. Sam nodded and said “Oh hey check out that First Aid kit and see if you notice anything amiss about it”. Alex knew his sister, and the innocent little smirk she wore just then told him the “goodies” she had mentioned before had to be in here. He grinned and moved the backpack off the chair so he could sit and examine the small rectangular box. “You know, its not fair that no one looks twice at you, while mom and dad are always on my case about ‘do the right thing’ and ‘college is important’” he said, doing his best to mimic their parents’ voices. “Well yeah” she said with a grin “because everyone knows i’m on the right path and already headed to college in a few months. You are still waiting to hear which colleges you’ve been accepted to and any mistakes you make now can affect those future plans” she finished with a semi-serious look on her face.
While Sam finished taking her Pill, Alex had opened up the First Aid kit and was rummaging through it. He spotted the smaller roll of Tylenol set next to the larger one, examined it closely and found a small slit in one. He said “Clever, good enough id say. I’m the only one that knows how you think” he said chuckling. “What are they?” and he tossed the small roll to Sam, having seen her motion that he should do so Sam unrolled it and said “Same thing I told you about that party you missed a few weeks ago” “You mean X?” Alex said with a raised eyebrow “Hey that should be fun” “Yeah, I’m really looking forward to it, I hate having to wait 3 days though” she said “So take one now, I gotchu. You can describe it to me and we can watch a documentary of the Universe hahaha”.
Alex didn’t mind either way and he wanted to see what it would be like, even if he had to be the one that stayed sober to make sure neither of them left the room and it was obvious that they were high to anyone they might wake up. The “Munchies” were always a problem with weed, so he didn’t know if that would be the case with this.
“Oh yeah?” Same said getting a bit excited at the thought “hmmm that actually might be fun!”. While she wouldn’t get to have sex on the drug, she could still get all the other sensations, feelings, and experiences while in a safe environment with her best friend. “So why not” She said to herself “Alright, sure! Hey get me that suuuper fluffy blanket off the top shelf if you don’t mind” Sam said nodding her head at the closet while she tore off one of the Tylenol packets from the strip. “Heck no, that is mine, and i’m already using it” Alex said, motioning for her to look at the top of his bed. She did, and sure enough there it was. “Gahh can I borrow it? This stuff makes my arms tingle and the feelings are intensified so much! I want to feel that on my skin!” Sam said as she showed him the goosebumps that were on her legs just thinking about it. Then she got up and went to the kitchen for a glass of water, while she did, Alex opened the window slightly to let the cold Winter air in and encourage the use of blankets.
Alex was a very smart guy, most of the family was in fact very smart and quick witted, so as soon as she said it, his mind considered a thousand different things at once. He quickly realized that, even though she hadn’t meant anything sexual by it, because in her eyes they were just best friends, and yeah they had seen each other naked before but it wasn’t exactly like that. But in Alex’s mind, he had used the mental image of his naked sister more and more often in recent times for when he needed to masturbate and didn’t want to go to his computer to look up porn. She was in the next room, he had seen her naked, so in his testosterone infused mind it was very easy to imagine her coming over and giving him a “helping hand” with his rock hard shaft and he would cum almost instantly.
And so Alex quickly agreed and gave her the blanket, then they both settled in their own comfortable positions to watch the History of the Universe documentary she had found on Netflix. Alex shuffling through some comic books he had on his night-stand, and Samantha adjusting from time to time to get into a more deeply comfortable position.
A while later as he finished up his 3rd comic, listening to the soft voice of the narrator on the documentary, Alex glanced up and saw that Samantha was lying on her back, staring at the ceiling, watching the fan slowly spin and rubbing her arms slowly, in an almost sensual touch. He said “How you feeling”
“Gooooood” Samantha said almost before Alex had finished his question, and she shifted her whole body and began to rub her arms in a more firm way as if coming back to consciousness and realizing her arms were cold “This is sooo ... it’s hard to explain, but it’s good. I love to kind of ‘tickle’ myself by barely touching my arms, it feels so strange, but in a fun way”. Sam giggled to herself quietly and just kept warming her arms up. “What time is it”
Alex glanced over at the clock and said “1AM” and then looked back up at the TV, determined not to pay attention to the fact that his penis had somehow gone from completely flaccid to a soft shaft while watching his sister and realizing the drug was affecting her in such a way. “Noooowayyyy” She said, almost in awe “it’s already been 2 hours since I took it?!”.
Alex pulled out his phone and looked up the effects of MDMA, and saw that they last usually around 3-4 hours, and it takes about an hour to kick in, meaning Sam was about an hour into a 3-4 hour trip, if Google were to be believed, so he decided to try something. “Hey Sam” Alex said and she looked over quickly at him, giving him her full attention and still kind of hugging herself, she gave him a quizzical look. “Want me to put some lotion on your legs? That might feel good” Sam considered this, and brightened further “Yeah that sounds lovely!”
Alex grabbed the coconut lotion from the shelf of his night-stand while Sam spun around on the bed so her legs could be lifted up and lay on her brother’s bed, something she had done before while they played video games or just chatted.
Sam pulled the loose pant legs of her pajama bottoms up so they were just above her knee-caps and Alex put some lotion in his hands and rubbed them together to warm them up, then began to rub Sams legs starting at her feet, then working his way up her calves and rubbing the muscles in a nice, firm way. He knew a few massage moves from the safety meetings his coaches had held in the last few years to show how to ease a tight or pulled muscle and help with muscle spasms after a particularly difficult soccer or football practice.
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