A/N: This is by far the naughtiest thing I have ever written so I'm really nervous about posting this.

That said, I loved writing it so much that I thought about writing this as a multi-chapter fic. This is Fincheltana, so it's a threesome fic. Please be kind, but let me know what you think honestly. I'm excited to hear what you think.

Come To My Window

Rachel sighed as she sat on the rooftop of her parent's café in New Mexico looking up at the stars. It was December and it felt like June. She hated the cold, so she shouldn't be complaining, but it was just so hot. She sat in her short shorts and red tank top and fanned herself with her book as she sipped on some sweet tea.

Rachel thought about ducking back inside her house to get another glass of tea and maybe change into her swimsuit top, but she didn't want to walk through her humid house, since the air conditioner was broken upstairs and she couldn't imagine even stepping foot inside. She hated this December heat wave. She pulled off her top and sat out on the roof in just her bra and shorts and continued to fan herself. She knew she shouldn't be so exposed but it was after midnight and she lived in Roswell, New Mexico. Who would she run into at this time at night in such a small town? As she sighed she grabbed an ice cube out of her empty cup and put it on her skin, letting it melt on her overheated body. She leaned back in her lawn chair and continued to let the water drip down her and relished in this new amazing feeling.

"Rachel?" She heard her best friends' voice and it snapped her out of her trance.

She sat and dropped the ice cube before standing, "What are you doing here, Santana?" She hissed.

Santana grinned her devilish grin at her, "Finn and I needed somewhere to… you know?" She winked, "He's down the ladder, I'm surprised you didn't hear me coming up."

Rachel shuddered a little, "I was distracted… by the heat."

"Sure." Santana winked. "It looked like you were going to finger fuck yourself with that ice cube." She smirked and walked a little closer to her friend, Rachel stepped back slowly.

Santana had always made Rachel a little nervous, but after a while that nervousness turned to an awkward friendship which then turned into an undeniable bond. Rachel loved Santana with everything she was but when Santana started dating Finn (who Rachel had also had her eye on) they had drifted apart, so that feeling of nervousness returned.

Santana smirked at Rachel, "Want to join us?"

Rachel could hardly believe her ears, "E-Excuse me?" she barked, "Who do you think I am?"

Santana rolled her eyes, "Oh stop the sweet Rachel Berry façade with me. I know you're into my boyfriend, and honestly, I've seen the way he looks at those short skirts. Let's get the sexual tension out of the way."

Rachel shook her head, trying to be appalled by the idea, trying to ignore the feeling of humidity attacking her underwear. "That would be an absolutely unacceptable thing for us to do, Santana." Rachel said, trying to make her voice sound steady, but squeaking as she did.

Santana leaned over to the stand where her empty glass stood, grabbing an ice cube and putting it in her mouth her plump lips making Rachel crazy. "You think I don't see the way you look at me?" Santana laughed, "The way you admire my low cut shirts." She motioned down to her white almost see through tank top and Rachel of course had to look, noticing Santana's practically visible nipples under the shirt. Rachel licked her lips inadvertently and her eyes looked down to her dark skinny jeans and 'Fuck me' red heels.

"Aren't you hot in those pants?" Rachel asks nervously.

Santana grinned seductively at her, "Why yes, yes I am. I was hoping to get out of them."

Rachel nodded and turned to her window, "I'll go get some more tea and ice, Finn can come up if he wants." She said before realizing that she was still in only her bra. She grabbed her shirt and Santana's hand was on it first.

"Leave it." She requested, "I'll take off my jeans and then maybe we'll play a little strip poker. Huh?"

Rachel bit her lip and crawled into her house. She shut the window behind her and ignored the extreme humidity that was surrounding her. She snuck into the kitchen as quietly as she could manager, getting three glasses of sweet tea and a fourth glass of ice. She poured out the fourth glass and grabbed a bowl and filled that up with ice. Her mind wandering to that ice being rubbed on her body, and then Finn's and then between Santana's supple…

No. She couldn't have a threesome with her best friend. She let out an excited squeal as her mind went to Santana's glorious nipples, she had seen them in the showers after gym class and for a week she had dreams where she walked in on Finn sucking on those fucking nipples. Then he would look up at her and would beckon for her to join him and she would. Finn would hold Rachel's hand and as they licked Santana until she screamed and then Rachel would jolt herself awake, running into a cold shower and shaking her head trying to forget the dream forever.

But it was always there, in the back of her mind. She grabbed the three glasses and the bowl of ice and made her way back to her room and looked around for a tank top to throw on, or a shot of vodka to take so she could convince herself of going out there without a tank top. She found a swimsuit top that was equally sexy as her bra but not quite as see through and changed into it. She crawled through the window and walked out to see Santana straddling Finn's shirtless form on the lawn chair she was sitting on before Santana had interrupted her. Rachel sat down the glasses and the bowl and Santana stood up from Finn's body.

Santana was pant less as promised and her purple lacy underwear were staring Rachel in the face, "Drinks." She choked out. "Uh, I can leave you two." She said, grabbing her glass and starting to walk back to the window and she felt a large hand grip hers, much too big to be Santana's.

She turned and looked down and Finn's large hand covering hers, "Please. Don't go. I know it's gotta be like a sauna in there."

Rachel bit her lip as she looked down at his rock hard abs, "Yeah, it's pretty hot."

"You know what else is hot?" Santana smirked and put her finger up, pointing to herself, "I'm fucking burning." She grinned, "I see you have some ice cubes for us why don't you bring those over here and come sit." She patted Finn's lap as if she was asking Rachel to sit on his lap.

Santana was encouraging Rachel to sit on Finn's lap, She picked up the bowl and walked around to Finn's other side and handed Santana the bowl to which she didn't take, "No, set it down, sit down and we can help cool each other off."

"Sit where?" Rachel asked stupidly and Finn patted his lap and Rachel's mouth dried at the motion.

"Come on, don't be such a prude." Santana rolled her eyes.

Finn growled in response, "If she's not comfortable you don't have to make her."

"No." Rachel stopped the argument immediately before sitting on Finn's lap, feeling his hardness under her thigh. "I want to." She told him before looking at Santana, "I've actually… I've thought about it before."

"Me too." Finn responded without thinking.

"Y-you have?" Rachel whispered back and Santana snapped her fingers.

"I wants to get my mack on." She told them, "So let's shut up with all the fluff and start cooling each other down."

Rachel nodded and moved to one of Finn's legs and Santana sat on his others, "We're not too heavy?" Rachel checked and Santana suppressed her glare.

"Of course not." Finn grinned putting his hands on both of the girls thighs.

Rachel reached into the bowl and grabbed an ice cube before handing the bowl to Santana who popped on in her mouth and then grabbed another bringing it to Finn's lips, he opened his mouth slowly and took the ice cube between his teeth. "Now kiss." Santana instructed. "Let the ice cube move between your mouths." Rachel looked at the sexy Latina who was basically narrating her current fantasy and grinned.

"Can I kiss you first?" Rachel bit her lip and Finn let a groan escape his lips.

Santana pursed her lips and let a look of lust cross her face, "Fuck yes." She responded before grabbing Rachel's face and planting a harsh kiss on her lips, Rachel let her jaw slack, inviting Santana's tongue inside of her mouth and the hand that held the ice cube fell to Finn's chest, as Santana and Rachel's tongues danced, pushing the ice cube around, Rachel pushed the freezing ball of water all over Finn's rock hard chest. Finn's hand found Rachel's back and slide down her bare back. He removed his hand for a moment and Rachel missed the contact but when his hand found her skin again, it had an ice cube in it and she shivered at the contact, but in such a good way.

Santana finally broke the kiss for air and Rachel was breathless, panting and realizing that with her hand that wasn't on Finn she was pulling at her shirt.

"You want this off, Berry?" She winked and looked down at Finn, "You feeling left out?"

"Not one bit." Finn grinned between to two girls, "That was amazing. You two are extremely sexy."

Rachel blushed at the comment and Santana grinned at Rachel, "You're not a virgin are you, Berry?"

Rachel laughed a little, "You know I'm not, San." She said sheepishly.

Santana beamed, "Good, because I can't wait to watch you fuck my boyfriend."

Rachel let out a squeak and looked down at Finn who had his mouth widened in surprise and his face showed nothing short of excitement. "Take your shirt off." Rachel instructed Santana.

"Fuck yes." Finn agreed and Rachel looked down at him with lust filling her eyes.

"Just go for it." Santana laughed, "Fucking kiss him already."

Rachel couldn't start a kiss with a boy, it went against everything she believed. But this whole thing was against her beliefs. Luckily as Rachel mulled this over, Finn got restless and used his abs to help him sit up and his hand gripped her face and his lips were soft on hers.

The kiss was sweet, too sweet for the situation and both of Finn's hands were on her, one still wet from the ice cube. Rachel feels him push the ice cube into her mouth and her hand found his chest.

Everything disappeared. Everything but him, and his tongue and his chest and…

And her top fell off, dropping onto his chest and the new air hitting her nipples broke her from the kiss. Rachel looked over and Santana who was also topless and she grinned at the pair.

"I was sick of looking at that swim suit top and now we match." Santana grinned and pulled Rachel to stand and Finn followed the two, Santana reaching to pull off his jean shorts.

He unbuttoned them and stepped out of them before standing between the two girls. One arm around each girl, his hand running down their bare backs and Rachel stared at Santana's bare chest and Santana reached out to touch Rachel's pebbled nipples, "Finn look at them." She instructed, as if he wasn't already. "Aren't they the cutest fucking things you've ever seen?"

Finn nodded and licked his lips quickly, "Oh yeah. "

"I want to taste you." Santana told Rachel and Rachel didn't know what to say, she broke the contact between to the two and grabbed a handful of ice cube and popped one in her mouth, before bringing one to Santana's lips and another to Finn's. They both took it willingly and then Rachel held out her hand and Finn and Santana both took a couple so she was left with two, "So what do you say?"

"What do you want to taste?"

"Those fucking perfect nipples." Santana said as if it her common knowledge.

"I want the other." Finn told Santana and they grinned evilly at each other.

"But what about me?"

"What about you?" Santana tilted her head.

"I want to lick yours too." The whine that escaped Rachel's lips shocked her a little, she didn't realize how much her body wanted Santana. And with Finn there, she was almost in overdrive.

Santana grinned, licking her lips, "We're going to rock your world." She said before grabbing Rachel's hips, the ice in her hand melting on Rachel's overheated body. Santana brought her lips to her and Rachel felt Santana nipples brushing against her own, so she went for it. She brought the ice cube to Santana's glorious plump breast and began to tickle them, before twisting them in her hands. Finn, whose hand was nowhere on Rachel and she missed it, groaned at the sight and Rachel moved her lips from Santana's to her neck.

Licking, biting, sucking. When she was positive she had left her mark she backed away and grinned at her best friend since fifth grade, backing right into Finn. Feeling his hard cock on her back, she turned and he grinned at her, "I set up a little area for us to lay." He told her proudly and Rachel responded with grabbing him behind the neck and pulling his lips to hers.

Who was this Rachel? Whoever she was, she liked it.

Rachel and Finn's cold tongues collided and suddenly she was hungry for more than just his tongue, she brought her cold hands to his bare back and his arms wrapped around her, backing towards the blanket and pillows he had set up for them. She broke the kiss when she felt Santana's bare chest on her and she silently thanked the Lopez family for approving that boob job Sophomore year.

She turned in Santana's arms and Santana kissed her lips and brought her down to the blanket, forcing her to lay back and she didn't mind, not one bit.

Santana's mouth was on her nipple in moments and Finn bent down next to her and his mouth went for her other and she grabbed his arm and he looked towards her with a grin and there was something indescribable in his eyes, it was more than just lust, more than just want. It was almost devotion. His lips met hers and he brushed his tongue against her lips and teeth and he tasted all of her, Rachel gripped at his arm as she felt Santana mouth fuck her nipples and moaned into Finn's mouth.

"Ohhh San." She moaned and Santana sat with a pleased smirk on her face before straddling the small girl, "You're so hot." Rachel told her and Santana nodded her confident nod and brought her hands up to her own nipples, beginning to twist them and moan and Rachel's core bucked at the sight.

Finn chuckled, "Oh, Rach likes that." Finn told Santana and Rachel grinned softly.

"I do." She told them and crawled off of her, lying beside her and smiled at Rachel, "Can I?" She pointed to her breast and reaching towards them.

"Well of fucking course." She growled with pleasure, "Come the fuck on, I don't have all day."

Rachel touched her left nipple and brought her mouth to her right and Finn lay behind her, on his side bringing his hard cock behind her ass, she pressed into him and moaned.

"Take off those shorts of her." Santana directed Finn and he did so, grabbing her ass as he did. Rachel moaned into Santana's skin and brought her lips to her other nipple and Santana put her head back in pleasure, bringing her hand into Rachel's hair and gripping her. "God this mouth of hers is amazing." She directed at Finn and he growled in response. His tongue licking Rachel's neck as Rachel went to town on Santana, Finn's hands on her hips, gripping her almost possessively.

When Rachel's mouth dried from the licking she went up Santana's lips and they shared almost a sweet kiss and Santana stood on her knees over Rachel and Finn who were spooning in front of her, "Okay, how about you," She pointed at Finn, "Fuck me from behind while I," She began slipping off her lacy panties and Rachel couldn't help but stare, "lick you silly." She smirked at Rachel and Rachel nodded profusely, "Anyone ever gone down on you, baby?"

Rachel bit her lip and shook her head, "No, not really."

"You're in for a treat." Finn murmured, "Santana's tongue is very talented." Rachel smiled and began to get comfortable as Finn took off his shorts behind Santana who was hovering over Rachel now.

"Fuck, my boyfriend marked you." She laughed, "He must like you." She winked and Rachel tried not to let those words go to her head.

Santana kissed Rachel's lips softly, sweetly before going down to her neck and then her nipples and then biting and licking her way down the rest of her body, when Santana was out of view, Rachel saw Finn in all his naked glory, her eyes traveled below the belt as Santana breathed on her soaking wet lips.

"Who are you wet for, Berry?" Santana breathed into her, "Me or him."

"Both." She told her and kept her eyes on Finn whole package, "I want you both. So much."

"You've got us." Finn breathed before walked to Santana, getting on his knees to go into her, Rachel and Finn's eyes met and he couldn't not kiss her. So he crawled over to her, kissing her softly and biting her lower lips.

He smirked at her before going behind Santana once again and Rachel felt Santana kissing her creases. Rachel watched Finn as he placed himself in the right spot to enter Santana and their eyes locked as he thrust. As he entered her, Santana's tongue entered Rachel.

Rachel moaned and closed her eyes, throwing her head back at the feeling. Santana lapped up all of her juices and Finn groaned both of their names as Rachel did the same.

"God San, you are so good." She moaned, "Oh Finn, you look so hot while you're doing that." Her eyes watched his muscles in his arms as he gripped Santana's hips.

"Santana." Finn moaned, "You're so wet. Are you wet for Rachel, San? God you should see her, San. She looks so sexy as she moans your name."

Santana moaned into Rachel as she licked her creases and up to her sensitive core, "You've gotta stop, San." Rachel breathed, "Or I'll come." Santana stood immediately and wiped her mouth.

"We wouldn't want that. I want to see Finn inside of you first." Santana told her and Rachel and Finn's eyes met in longing.

"I want to go down on you first." Rachel blurted out.

"Didn't think you had it in you, Berry." Santana chuckled.

"With Finn." She told her, "I want us both between your legs."

Santana nodded with pursed lips, "That sounds absolutely fucking amazing." Santana breathed with a grin before taking Rachel's spot and spreading her legs.

Rachel copied Santana, hovering over her first and kissing her before kissing down her body and Finn admired the two women, "I could get used to this." He mumbled under his breath and both women pretended not to hear him. When Rachel got to her creases, she beckoned for Finn to join her. Finn bent down and kissed Rachel's neck tenderly before kissing the inside of Santana's thigh. Santana's hands went to her own nipples and she began to play herself like a violin.

Santana was moaning in Spanish, Finn and Rachel smirked at each other, Finn moved to kiss Rachel softly before bringing his tongue to Santana's sensitive nub, knowing exactly what would get her going. Rachel watched in almost jealousy. Finn didn't even know what he was doing to her. Rachel brought her finger to reach inside of Santana coaxing a 'Fuck' out of her and Finn breathed heavy at the sight. With Rachel's free hand she grabbed Finn's and brought his to her skin, below the waist and he picked up quickly what she was hinting at.

He worked on tongue fucking his girlfriend as his hands went between Rachel's legs and inside of her and Rachel moaned in unison with Santana.

Santana tasted like sin and everything bad in the world, everything bad in the best way. And Finn's hand felt like a fucking cloud, like heaven had come in the form of his middle finger curved into her g-spot perfectly.

Santana writhed in passion and bucked into Rachel's hand, Rachel couldn't quite get her tongue where she wanted so instead she kissed the inside of her thighs, leaving marks to remember her by.

Rachel felt something on her finger she had never felt before, Santana's walls collapsed around her finger and Santana yelled and moaned, "Holy fucking HudsonBerryFinnRacheeeeeeel. Fuck."

Finn pulled back and bit his lip, "You didn't stop us." He laughed.

Rachel sat too before noticing Finn's finger was still buried inside of her, he didn't move it, he kept working on her, "Lay back." He smiled, "It's your turn."

"My turn for what?"

Santana stood and grabbed a glass of sweet tea and sat on the chair where it all started, "I'm going to watch Finn make you come." She told her, "Fuck Berry, you know what you're doing." She said with a yawn as she shimmied back into her clothes and laying back in the lawn chair.

Rachel and Finn smiled awkwardly at each other and Rachel laid back before Finn brought his lips to hers, attacking her, feeling her all over and Rachel did the same. He tasted like Santana and sweet tea mixed. He brought his finger from inside of her to their mouths, both of them licking her juices off of it. Finn continued to kiss her grinding himself into her, "I'm going to taste you." Finn told her quietly with a smirk trying to pull away and Rachel shook her head, gripping him closer to her.

"Not, Finn. Just fuck me." She almost pleaded and both looked up to see what Santana wanted.

Nothing. Santana wanted nothing because she had fallen asleep from her mind-blowing orgasm. Finn nodded to Rachel and kissed her again, with more and more passion. Rachel reached down to touch him and he shivered at the contact, "Come inside." She directed and he smirked before adjusting himself.

"Fuck, I need a condom." Finn growled and Rachel giggled.

"I'm on the pill." Rachel smiled, "You can fuck me without one."

"Are you sure?"

"I want to feel you." She pleaded and he didn't disagree because…

"I want to feel you too, so fucking bad."

Without hesitation Finn crashed into her and Rachel squealed at the contact, gripping his hair and Finn's mouth was on hers again, this was the single most passionate moment she had ever had.

And she didn't know it, but it was the most amazing moment Finn had ever experienced either. Finn thrust into her and she met each thrust with her hips crashing onto his and their tongues danced. It felty like Finn couldn't get close enough to her.

Rachel reached in between them and felt her cluster of nerves and looked into Finn's eyes, "Come inside me." She almost begged and Finn nodded, crashing his lips onto hers and letting himself come inside of her.

And everything disappeared. Everything. It was only them. It was only this.

Rachel thought that she would never be the same as his contents leaked inside of her and Finn knew he wouldn't.

Finn collapsed onto her, staying inside her body, not wanting to lose the connection.

"You are perfect, Rachel." Finn murmured into her sweaty skin and Rachel's chest heaved as she heard the truth behind his words.

"I have never felt so… so…"

"Loved." Finn finished her sentence and met her eyes with understanding and she nodded slowly.

"Well… this is awkward." Santana's voice crawled from behind Finn's head and Rachel and Finn's heads turned to her with almost fear.

Santana looked like she was going to lose her shit, just for a moment until she grinned, "I fucking knew it." She beamed, "I knew you guys wanted each other." She laughed and Rachel and Finn's eyebrows pulled together in confusiton. "I'm totally telling this story at your wedding." She said with a scoff, "Okay, well needless to say," She directed at Finn who was beginning to stand up awkwardly, helping Rachel up as well, "We're totally breaking up since you're in love with my best friend."

Rachel looked between Finn and Santana with confusion, "But, don't worry. I totally approve as long as you guys let me in on the fun once in a while." She beamed before walking towards Rachel and kissing her friend on the cheek and then the lips, the kiss seemed innocent but full of so much more. Santana gripped Rachel's naked body and whispered, "Take care of him." She smiled and smacked Rachel's ass and Finn and Rachel shared a confused glance.

They sat their staring at one another as Santana disappearing into the night, "Did that really just happen?" Rachel finally laughed out loud.

Finn nodded with a half grin, "Yeah, but I can't even tell you how happy I am that it did."