AN: Filling some gleekinkmeme prompts that I think are good. This is just one of many I have coming. Hope you guys enjoy it.

Quinn and Rachel have been dating since high school. They now live in an apartment with Kurt and Santana in NYC. Quinn has become a paranoid mess in the past year. 5 times she has walked in on Rachel and Santana in compromised positions. 5 times she has heard phantom moans and creaks of a bed in the middle of the night.

It has come down to either admit she's crazy or find proof that she is not.

Want:
Rachel or Santana has the GP. (I'm hoping for Rachel)
It is up to the filler if Quinn goes crazy or she is proven right.
Whoever doesn't have the g! p is a total cum slut for the other. The two girls are insatiable for one another. Various compromised positions that can be explained away easily ie loss of contact, helping with breathing exercises, etc. Rest is up to filler.

Crazy or…?

Quinn wasn't stupid.

Sure back in high school she made a lot of questionable decisions, but that was almost seven years ago and she was far removed from the girl she acted like during her HBIC days.

She had gotten the hell out of Lima, Ohio and moved to New York graduating at the top of her class at NYU. And now she was poised to graduate in the top 5% of her class at Columbia-Law proving that although she was blonde she was far from stupid.

But she might be crazy.

Certifiably insane. Bonkers. Off her rocker. Out of her fucking mind and any other term you can come up with.

You see it all started six months ago:

*Flashback*

Quinn was exhausted. She was in her second semester of law school and unlike what some people said it wasn't get any easier. It felt like every night she had a twenty paper due or had to read over a case which only made her wish she had a twenty page paper to do.

She knew Columbia wasn't going to be easy which is why she choose it because she honestly liked a challenge, but on the nights that she spent hunched over tens of books in the law library she wished she just forgo law school all together and went into the music business like her longtime girlfriend Rachel.

They had been together since high school after when she finally admitted to herself that she was a lesbian after a pregnancy scare with Noah Puckerman of all people. After the test came out negative she immediately came out of the closest, and months later she was falling happily in love with the one and only Rachel Berry.

Sure their relationship wasn't perfect, but they made it work and after graduating high school and moving to New York with their friends Kurt and Santana she knew that the Broadway singing brunette was the one.

They had been through it all from Quinn parents kicking her out to living in cramped one bedroom apartment that was the practically the size of a closest.

Now she was a year and half away from graduating law school and Rachel was starting to pick up more roles they were finally living their New York dream. It wasn't perfect, but with her interning at some of the city's biggest law firms and Rachel's minor success they were getting there.

They had even upgraded their cramp one bedroom apartment for a nice four room one thanks to the shared income of their best friends Kurt and Santana living with them.

Everything was perfect and after spending more than ten hours in the law library she wanted nothing more than to head to her nice four bedroom apartment and spend the rest of her night with her beautiful girlfriend.

Because lately with her course load and the hours Rachel had to put in rehearsing, auditioning, and practicing her runs and lines they were barely able to see each other.

They were like two ships passing in the night and the only time they got to interact with one another is when one of them was headed out the door and the other one was heading in.

And after studying this case from front to back she was ready to sit back, relax, and spend time with her beautiful girlfriend even if that meant a marathon of Barbara Streisand films.

She gathered her notes and packed her bags before heading out to catch a cab home practically in running out the building. Luckily her years in New York taught her a couple of things and before she knew it she was on her way home an excited smile on her face.

Twenty-five minutes later she was handing the cabbie the fare and making her way into their building saying a quick hello to the desk clerk before heading up to the place.

She, Rachel, Santana, and Kurt had lived here for almost two years and although it had some of your usual stereotypical New York problems they were able to get it at a steal thanks to Santana's dad who knew the previous owner.

It was spacious and with their added income they were able to afford it and still have money left over. Don't get her wrong she would love to have a place of her own, but until she graduated and got a job with one of the cities firms this was considered a luxury.

So many of her classmates were living in hole in the walls in neighborhoods she wouldn't bother going to during daylight let alone night time so she counted herself lucky.

She happily whistled as the elevator took her to their floor a slight skip in her step as she made her way to the front door.

"Rach I'm home!" she yelled out entering the apartment. She hung her coat up and threw her bag in the corner her eyes furrowing in confusion due to all the lights being out.

She had check Rachel's schedule before she left this morning and knew that she got off more than four hours ago. Usually that meant she would be walking in to her sitting on the couch eating whatever new vegan snack she bought and watching Barbara Streisand, or practicing her lines to their neighbors annoyance.

"Rach?!" She yelled walking into the living room. She noticed the purse she bought her for Christmas on the dining room table and some vegan soy crackers open up next to it so obviously she was home.

She headed to the back of the apartment where their rooms were at checking their room because first. "Rach?" she repeated walking around the bed and to their bathroom. "Where are you?" she muttered to herself before heading out.

"Rach?!" she yelled in the hallway again before her ears picked up the sound of something falling and some muffled voices. "Rachel? Is that you?" she asked hurrying down the hall towards the sounds.

"Rach? Are you in there?" she said twisting the nob and walking in her best friend Santana's room.

"Hey" Rachel greeted running a hand through her slightly matted hair.

"Hey babe" Quinn replied a happy grin on her taking in the beautiful sight of her girlfriend who was casually lying down on Santana's bed. "I was calling for you….and why are you sweaty?".

"Santana was helping me practice my runs" the brunette answered climbing off the bed to properly greet her girlfriend with a kiss. "And you know how warm she keeps her room" she shrugged.

"Yeah" Quinn agreed. Santana weirdly did like her room unusually warm. "Where is she?" she asked looking around the empty room seconds later she heard the toilet flush before her bestfriend of almost twenty years walking out the bathroom wrapping in nothing but a towel her hair and body wet.

"Right here blondie" the Latina smirked no shame as she walked around the room.

"Hey San" Quinn greeted ignoring her friends potential nakedness. They had known each other since they were kids and seen each other naked more times than she could remember. Plus in a house filled with three lesbians and a gay man that wasn't the worst thing you could possibly see. "What are you doing home?" she questioned.

While Kurt and Rachel were trying to break out as Broadway stars and Quinn was working on her law degree Santana was already on her way to being rich and famous.

Literally the first couple of months of coming to New York she had gotten a job with Sony studios and after a couple of years had become one of their biggest songwriters and producers. She had worked with some of the industry's biggest talents and just recently got a promotion as part of their talent search team. This meant she was usually in various bars or clubs every night search for the next big act. Sometimes she would even have to fly out to another state or country when the company got word of an artist.

She had slowly made a name for herself and although there were times when all three of them were jealous they couldn't be more happy for her.

"I'm not" the Latina quipped walking to the end table and checking on her phone making sure she didn't miss any important messages. Her job was a 24/7 gig and at any time she could get an email or text requesting her to head into the city or to the airport. She was always on call, but at the end of the day she loved it.

She got paid well, worked and hanged out with entertainments biggest names. Got to walk the red carpet and attend award shows. Traveled all over the world on the companies dime and she didn't have to deal with any of the politics or bullshit that came with being in front of the camera. No, all she had to do was sit back, sip champagne, write a couple of hits, and give her say on who she thought was talented or not.

"I'm actually about to head out" she said walking to her large walk in closest. This had been her place before Rachel, Kurt, and Quinn moved in, and of course she got the bigger room which meant the biggest closest much to Kurt complaints.

"Oh, who are you seeing now" Quinn laughed sitting on the Latinas bed. Santana had a reputation of being somewhat a player and when she wasn't working she was playing.

"Shut up" Rachel giggled hitting the blonde on the arm as Santana carelessly disrobed in front of them.

"Some emo band in Brooklyn" the Latina said pulling up a pair of tight jeans carefully tucking herself in. "Probably going to end up being a waste of time, but it's my job" she shrugged grabbing a shirt and throwing it on. She wasn't a big fan of underwear.

"People still listen to emo music?" Quinn laughed.

"Exactly" Santana chuckled grabbing her favorite leather jack and boots. "If y'all want y'all can meet me in the city and we can hit some bars and clubs" she offered.

"Sure" "No thank you" Rachel and Quinn said at the same time.

"Why not?" Rachel asked the blonde.

"Well I thought we can-you know just hang out here" Quinn subtly answered. Unlike Santana she wasn't very voyeuristic and prefers to not have everyone know what they got up to in the bedroom.

"But I want to go out?" the brunette whined. "Come on it will be fun" she urged.

"It's just that…we haven't spent that much time together, and I kind of just want to relax" the blonde countered.

"Come on Quinn live a little" Santana teased putting her shoes on.

"Come on baby" Rachel begged. "We can relax any time lets go have fun. It's been months since we gone out" she said with a small pout.

Quinn took a couple of seconds before finally agreeing to go out and hours later she was standing at the bar in one of New York's hottest clubs waiting for her drinks. They had even got Kurt to show up and were dancing and laughing like they were back in high school. She had to admit that it was fun even if she would rather be alone with Rachel.

She smiled grabbing her drinks and heading back to the VIP section that Santana was able to get them in squeezing and pushing her way through the crowd. "Hey Kurt!" she yelled making her way to the small couch they had claimed. "Where did Rachel and Santana go?" she asked passing him his drink looking around.

"I think to the bathroom!" he shrugged taking a sip of his drink. It was pack tonight and he was definitely noticing some hot guys he wouldn't mind taking back home.

She sighed looking around the crowded club for the two. This whole night Santana and Rachel seemed to be attached at the hip. Every time she wanted to dance Rachel would come up with some excuse, but then Santana would ask and next thing you know she was happily heading to the dance floor.

It was starting to annoy her. All she wanted was to spend time with her girlfriend, but the entire night Rachel was acting like she didn't exist. She sat there for a couple of minutes before releasing a frustrated sigh.

"I'm going to go check on them!" she yelled getting up and heading to the bathrooms Kurt waving her off as the guy he had been eye fucking across the room made his way over.

She grumbled making her way through the pushy and drunk crowd heading to the private restrooms for the VIP section the one good thing about being VIP is that there was not a long line of half-naked or drunk girls waiting. She walked in shooting a polite smile at the couple of girls who were fixing their make-up, but still didn't see them.

She headed back up looking around a relieved smile when she noticed the manager Santana introduced them to across the room. She quickly hurried over to him, "Hey, have you seen Santana?".

"Back office" he replied before pushing past her and getting lost in the crowd.

She made her way to where she guessed the offices would be once again having to push through the hordes of bodies and just when she made it through she saw her girlfriend and best friend stumbling out the room fixing their clothes.

"Hey!" she called out causing them to jump in shock. "What's wrong with y'all? And where have you been?" she fired off rushing up to them.

"Sorry baby we were using the bathroom" Rachel replied quickly clearing her throat and subtly trying to straighten out her clothes.

"But the bathrooms are over there" the blonde pointed out.

"Yeah, but the line was long" Santana shrugged looking down at her phone. "I got to go I'll see you guys back at the house" she added quickly taking off.

"What's with her?" Quinn wondered watching her bestirred disappear. "And what's been going on with you?" she added.

"What are you talking about?"

"This entire night you and Santana have been attached at the hip and every time I look up your gone" the blonde informed with a small frown. She was really looking forward to spending time with Rachel plus she was hoping she would be able to get some tonight's. It's been almost a month since they had sex, and she was feeling a little wound up.

"I'm sorry baby" Rachel cooed wrapping her arms around the blonde's neck. "I promise for the rest of the night I'm all yours" she promised.

"Thank you" Quinn grinned bringing the petite brunette into a passionate kiss her brow crunching as she explored her girlfriend mouth. "What did you drink?" she asked pulling away from the brunettes lips.

Rachel tongue had a distinct taste to it far from the usual hint of candy or mint she always got.

"What are you talking about?"

"Your mouth taste funny" the blonde shrugged licking her lips as she tried to figure exactly what it tasted like. It was familiar, and she knew she's tasted it before but she just couldn't put a finger to it.

"Ohhhh" Rachel said. "I had some of those soy crackers you hate in my bag earlier, and I got hungry" she excused.

"Okay" the blonde shrugged off. Rachel's vegan food always tasted weird to her. "Do you want to dance?"

"Of course baby" the brunette smiled grabbing her girlfriends hand and dragging her to the crowd of dancing bodies where they spent the rest of the night.

*End of flashback*

Thinking back on it now Quinn should have saw the signs. The tussled clothes, the fact that they kept disappearing and even the weird taste in her mouth that she didn't even what to think about what it was.

And ever since then she had been going crazy.

She never would think Rachel would cheat on her especially with her best friend of all people, but that was the only thing that made sense.

Every time she would come home Rachel would be in the shower or Santana fresh out of one, and the times they weren't in the shower she would walk in and hear the sound of hushed voices as they so called practice Rachel's lines.

Not to mention when she would find the two in compromising positions. Rachel had been practicing yoga for years and Santana used to always make fun of it, but now they were both doing it. Hell there was only some many times a girl could walk into their apartment and see their girlfriend in downward facing dog with another person pressed up against her especially since most of the time they were barely clothed when they did it.

Or whenever she woke up in the middle of the night to the sound of moans and a creaky bed with Rachel nowhere to be found until minutes later when she would walk in carrying a bowl of cereal or something even though she hated whenever Quinn ate in the bed.

Or the time she found Santana's briefs underneath their bed and Rachel came up with some excuse saying that they must've got it mixed up with their laundry.

Or the time Rachel would spend all night at Santana's studio "practicing runs" or "working on her music". Only to come home; and immediately jump in the shower and go to bed.

She had even found a condom wrapper in the kitchen trash and even though that didn't mean that Rachel was cheating because it was the same brand Kurt and Santana used and they had people over all the time she still got sick feeling to her stomach once she noticed it.

She wasn't stupid and after months and months of this she finally started to connect the dots.

She couldn't believe Rachel would cheat. She thought they were the perfect couple and for the past couple of weeks she had been thinking back on the past couple of years and couldn't find what would cause the love of her life to stray.

For all she knew they were happy, and now that she was closer to graduating and Rachel had starred in her first big role they were even talking about possibly moving out and getting married.

For all she knew everything was going according to plan.

AN: Broke it up into 3 parts since it was almost 10,000 words.