Title: One Night

Prompt from anuria (guest): How about a neighbors AU or roommates AU where she doesn't like him at all but he has a huge crush on her and then he starts to grow on her and they have a one night stand situation and decide to be together.

Rating: M

A/N: When I saw this prompt, I immediately thought of a one shot I wrote a while back called One Night. So, instead of writing a very, very similar story to that one, I changed that one around a bit and posted it here. Please review and give me more prompts! I don't own anything but the plot.

I was having an amazing dream… it involved Channing Tatum and a hot tub, let's just leave it at that. A violent shaking woke me up at the best part, and the growl that came from my throat automatically should have been a signal to the person shaking me. And yet, when I finally opened one eye, a smiling Killian Jones was sitting on my bed, his hands on my shoulders, looking totally comfortable. I pushed him away from me, wild eyed.

"What the hell, Killian? Why the fuck are you in my bedroom right now?" I screamed at my brother's best friend. He and my brother have been best friends since they were ten, but he's always been the most obnoxious, narcissistic, cocky son of a bitch. I barely tolerated him, and that's only because of David. And yet, my brother dearest didn't even ask before he allowed Killian to move in with us. We were barely three weeks in and I was already pulling my hair out. He used all the hot water, played guitar in the middle of the night, and teased me constantly.

Killian's famous lopsided smile graced his pretty face. With black hair, a five o'clock shadow, amazing cheekbones and the bluest eyes I've ever seen, he was a good looking guy. There was no denying it. There had even been a brief period of time where I was kinda, maybe a little, okay a lot in love with Killian Jones. Like, when I was fifteen and he was sixteen. I have no excuse, other than I was a ball of hormones and he was a pretty person. It was a lapse in judgment. I stood by as he loved and left girl after girl all through high school and into college. As a college senior, I swear he has dated every attractive girl at Storybrooke University – he's a man slut. For real. But at least he tells them that he doesn't do relationships and is totally honest, I mean, no one can say he leads girls on.

"Well, love, Mary Margaret, Ruby, and Graham are here. The party starts soon. Don't you think you should wake up and get ready to go?" Ugh, I forgot about the stupid party. Our friend Jefferson was having a "finals are over, let's party" party at his house. It was supposed to be the event of the year. If it was up to me, I'd stay curled up in my bed dreaming of Mr. Tatum. Unfortunately for me, my wonderful best friends Mary Margaret and Ruby came busting into the room right when I was ready to throw a pillow at Killian and go back to dream land.

"Killian, we gave you one job, to drag Ems out of bed!" Ruby yelled at him, slapping the back of his head. Have I mentioned that she is Killian's sister? Yeah, we live in that crazy universe where two best friends' little sisters also became best friends. Killian started to protest, but Ruby shot Killian the silence, I kill you look, and with mumbled goodbyes, he backed out of the room. Yep, even he is afraid of his wild ass baby sister.

"Okay, what are you wearing?" Mary Margaret said, as soon as she closed the door behind Killian.

"Um, jeans?" I asked, wishing that for once that would be acceptable. To no one's absolute shock, Ruby scoffed.

"I think not," she said, entering my walk in closet. A minute later, she emerged with a tiny, tight, hot pink dress. It looked a lot like the dress she was wearing, actually, except it was pink instead of red. Where the hell did I buy that?

"I bought it for you when I bought mine, I stuck it in your closet a couple weeks ago. It's perfect!" Ruby tossed it to me and I shrugged out of my t-shirt and shorts and slipped the dress on.

"You look amazing, Ems," Mary Margaret said from her seat on my rocking chair.

"Why can't I wear a dress like yours?" I asked her, knowing the answer before Ruby even responded.

"She's got a ring on her finger, Ems. David has committed. There is a date set. You, my girl, are a hot single girl that needs desperately to get laid!" I laughed at that just as Ruby started doing my makeup.

"God, Rubes, you make it sound like I'm a prude. I just got out of a relationship," I murmured as she applied eyeshadow to my eyes. Okay, so Walsh wasn't really a relationship as much as he was… well, a pain in the ass. The sex wasn't good enough to keep that high maintenance guy around. I hadn't been in a real relationship since Neal when I was a college freshman. He made me fall in love with him, and then six months later he stole $500 and vanished. I haven't heard from him since, and I'm really not eager to repeat that heart breaking experience. Instead of responding to Ruby, I started a mindless conversation with Mary Margaret about bridesmaid dresses, which we were going to pick out next week. Before I knew it, Ruby was done and handing me my black stilettos and cell phone. I slid the shoes on and stuck the phone in my bra as we left the room. David, Graham, and Killian were sitting on the sofa watching some football game.

"So, how do we look?" Ruby asked, fishing for a compliment as usual. The boys turned to face us. David's eyes immediately went to Mary Margaret and stayed glued to her as he got up, walked to her, pulled her into his arms, and started whispering in her ear. They're seriously too cute.

"You all look very nice," Graham said, completely disinterested.

Then I looked for Killian's reaction. His eyes were on my body, looking it up and down. It wasn't the first time I'd caught him checking me out, but I didn't really mind. It didn't mean anything, considering he's never so much as flirted with me. He just admires the goods. I mean, I do the same thing, and I basically hate him, so really it means nothing. When he noticed that I noticed him looking, he looked back to the game without a word.

Five minutes later, we walked the two blocks to Jefferson's house. As we entered, Mary Margaret and David disappeared into their own world. Ruby went to find her man of the week. Killian, Graham and I made our way over to get some drinks. Before long, one of Killian's new toys dragged him away and Graham found his boyfriend, Hunt, and wandered off. Then I was alone in a huge house full of people. Ignoring everyone, I grabbed a bottle of vodka and a shot glass and made my way to the back porch swing. Staring out into the night sky, I started drinking. And the time passed.

It could have been an hour later, or maybe three. I don't actually know. I may or may not have drunk half a bottle of vodka alone. At some point, I fell asleep on the porch swing, and was awoken only when I felt myself being picked up and held close. I smelled a familiar smell – ocean and rum and cologne. Killian.

"Killy…" I slurred.

"Shhh, I'm taking you home. David is sleeping at Mary Margaret's and asked me to get you home safe. It's late, so we're leaving. Just go back to sleep," he said, quietly. He carried me all the way home without so much as getting out of breath. God damn, that man and his muscles. And his good smells. And his prettiness. And his thoughtfulness. Damn, every time I drink I get all these weird, Killian involved thoughts. I can't help it. My drunk self can't help it, I should say.

Killian placed me gently in my bed, pulling the covers down and tucking me in. My eyes were closed and I sighed contentedly. As he pulled away, I grabbed his hand. "Stay with me…" I begged, still slurring my words and opening my eyes.

"I don't think that's a good idea, love," he whispered. And I noticed that he was slurring his words, too. Apparently even drunk Killian took care of me. His blue eyes were burning into mine and I was staring straight back.

"Please," I mumbled, gripping his hand tighter. He sighed loudly before he pulled his shirt over his head and crawling in to my bed next to me. He laid on his side, facing me, and I rolled onto my side, facing him.

"Goodnight, Swan," he said, using the childhood nickname that I always hated. But suddenly it was endearing. So, naturally, I leaned in and brushed my lips against his. He sighed and ran his hands through my messy hair.

And it was like a god damn dam broke. My mind shut off. I didn't even process that this was Killian. All I felt was the lust and affection spreading through me. Suddenly, I couldn't get enough. I pushed myself impossibly closer to him and wrapped my arms around his neck. "Gods, Emma," he moaned against my mouth. He rolled so that my body was pinned under his and his hands roamed up and down my body. My hands found their way to his naked chest and ran through the dusting of hair there. His lips moved from my lips to my jaw to my neck and I couldn't help but whimper. I fucking whimpered. Emma Nolan doesn't whimper. Except apparently I do. I pushed my body up into his, savoring the groan that came from his mouth as our cores grinded together. I felt him hard and long against my thigh and sighed in anticipation.

I felt myself getting wetter as Killian slid my dress up and over my head. I can't even describe the feeling of his hands caressing my naked body. His lips moved from my neck to my chest, where he kissed the swell of my breasts. He took the cell phone out of my bra and tossed it across the room. I was too far gone to protest. As his lips worked, Killian's hands ran along the sensitive skin under my bra before he finally unclasped it and dragged it from my body.

A feral moan came from my mouth as his mouth descended to my right nipple and his hand started pinching my left one. They were so hard they were painful. I'd never experienced such pleasure. I swear, I thought I was going to cum before he even left my chest. I could feel my clit throbbing as my hands went to Killian's jeans, unbuttoning and unzipping them. His hands left me to pull them down off his legs so that he was just in tight boxer briefs. When he returned, he began kissing down my abdomen, until he made his way to the apex of my thighs. My moans were not even controllable as he kissed my inner thighs, pulled my underwear down my legs, and finally, finally licked my sopping slit. I swear, I saw stars. He put one finger and then a second inside of me. When he licked and then sucked my clit, light flashed behind my eyes and I saw white. I may have passed out. My orgasm rocked me harder than I'd ever experienced before.

"Killian," I managed to choke out as I recovered from my high. "I need you, Killian." He kissed me again with a fierceness I'd never felt before. I pulled his boxers down as far as I could and then, using all my strength, rolled us over. I tugged his boxers all the way off, lined myself up with him, and rocked my body until he was fully sheathed inside me. His groan was unbelievable.

"Ride me, love. Take what you want," he practically growled as I moved above him. His hands went to my nipples, and when he sat up to once again kiss me, the change in angle made me cry out loudly. I moved faster, working myself up as I felt the tightening in my belly. I was bouncing up and down and rocking, taking Killian for all he had. He was thrusting up, meeting me each time with equal pressure. Within only a few minutes, I was once again cumming, groaning loudly as my walls clenched Killian inside of me. "Fuckkkkk!" I screamed as I came.

Before I even came all the way down from my high, Killian flipped me over so that I was underneath him once again, flat on my back. My legs were perched on his shoulders as he slammed in and out of me again, hissing with satisfaction. I pulled my legs towards my chest and felt him go impossibly deeper. That spot inside me, the one I'd only ever touched myself, was suddenly being rubbed with every push.

"Killian! Fuck, Killian! Right there. Oh my god, right there!" I screamed, eternally thankful that we were alone. He pushed in and out impossibly faster, activating parts of me that I didn't even know existed. He brought a hand to my clit and rubbed gently, and I was over the precipice again, cumming hard and feeling my juices running down my body.

But Killian still wasn't done. He pulled out of me, making me whimper again, and flipped me over. Soon, I was on my hands and knees with his arms wrapped around me. He pushed back into me without warning and I moaned loudly.

"Fuck, Emma, you're so tight and wet. I can't get enough of hearing you moan my name. Gods, Emma, I've dreamed of this for so long," he groaned, pushing into me even harder. If I was not in the midst of the most amazing pleasure of my life, maybe I would have reacted. But the tension was building in me again and I felt another orgasm building. Killian was getting sloppy, I could tell he was getting close too. So I started furiously rubbing my clit to push me over the edge.

"God damn, Killian. I love you. Fuckk, I need you. God, I need you so much!" I screamed as I felt my walls tightening around him one more time. This time, my high triggered Killian's and I felt him cum inside me with a groan of my name. In that moment, it felt so right. He pulled out of me and we laid next to each other, silent. There was something in his eyes, something I couldn't identify. And a smile graced his lips. Before long, we fell asleep, me curled into his body with his arm wrapped around me.

The sunlight came through my bedroom window far too early the next morning. I groaned, feeling pain in every muscle of my body. But it was delicious, satisfying pain. When I opened my eyes, I saw Killian sleeping peacefully next to me. Suddenly, I realized that his arm was around me and we were both naked. And then all the memories from the night before came flooding back to me. The pleasure was unbelievable (I mean four orgasms), but there was something more. Feelings. Real feelings. God damn him, he snaked his way into my heart again. As I went through the memories, I realized something. He felt it too. And that was scary, because I knew him. He was a playboy, being in a monogamous relationship was never going to happen with him. Did I want it? Yeah, I did. But it couldn't happen. I'd known that my whole life, so I always pushed him, and my feelings, away. With a long, sad sigh, I tried to disentangle Killian's arms from around my body. He moaned and pulled me tighter.

"Emma," he whispered, almost silently. I thought he was awake, but he wasn't, he was still peacefully slumbering. I decided to take the few moments I had left of Killian's affection, and settled back into his arms. Five minutes later, I felt him stirring and met his gaze.

"Hi," I mumbled, suddenly embarrassed.

He smiled. "Hello, love."

I was insecure and uncomfortable. What if he didn't remember? What if he didn't want to be here? "I… do you… do you remember?" I managed to squeak out.

"Of course love, I remember every second. Do you?" He looked equally apprehensive as he asked. I leaned forward and kissed him chastely on the lips.

"Yes," I replied, smiling. "It was… amazing, Killian. Thank you," I said, pulling myself out of his arms and grabbing my robe from next to the bed. This is it, it's over. Killian sat up with a puzzled look on his face.

"Where are you going, love, don't you think we should, I don't know, talk?" he asked, his eyebrow raising adorably.

"What is there to talk about?" I replied. "It happened, we move on. It doesn't change anything." I felt like throwing up just saying it. His puzzled expression shifted into a frown.

"It… it doesn't?" He actually looks upset.

"I mean, we don't do relationships, right?" I said, unsure of myself. Why the hell is he so upset? "And we were drunk and…" before I could finish he interrupted.

"Clearly, you don't think me capable of loving you, Emma. I think I'm just going to go get some coffee. I'll be back in a bit," he said while he dressed in his clothes from the night before. I just stood there in my bathrobe, watching silently as he left my room and then the apartment. I was frozen, unable to call out to him. To tell him I meant it last night. To tell him I loved him. As he left, David arrived home.

"Hey sis!" he greeted me, smiling. I just nodded hello and closed my bedroom door. Not even a minute later, my brother was knocking. I opened the door, and he had his nervous, big brother face on.

"What's wrong?" he asked, clearly concerned.

"I… I made a mistake," I said, my voice breaking as tears burst through. I sat down in my bed. He sat next to me.

"What happened?" he asked.

"Don't be mad, please." He nodded. "I uh, well, I um, I… I slept with Killian last night.

David's eyes went wide. "Finally!" he shouted. Confusion dwarfed my feelings of utter despair.

"Excuse me?"

"Ems, Killian has been in love with you since we were thirteen. He thought you only saw him as a brother. I tried to convince him differently, but he said he respected your feelings, or lack thereof, for him. He's never been in a relationship because there was only one person he wanted a relationship with didn't want him." I looked at my brother, shocked by this development. He just continued talking. "I mean, I've known for years that you two would end up together. Me and Ruby had a bet in high school on how long it would take. Yet the two of you are so stubborn it's taken years longer than we thought."

"David, I don't love Killian. I've hated him most of my life. I can't love him. I don't." I didn't know who I was convincing, him or myself. Apparently David knew.

"You're not even convincing yourself, Emma. You've never hated him. You just kept him away to avoid actually feeling something." God, why does my brother know me so well. I stood up, needing to be alone.

"David, I'm going to take a shower. I just need to think." He smiled and kissed my forehead, leaving the room as I wandered into my bathroom.

While I stood under the warm water, I guess I had an epiphany. I remembered when I was thirteen and having a puberty-induced bout of self-consciousness. Killian told me I was like a swan, maybe I was a little duckling now, but one day I'd be a stunning swan. The nickname stuck. I remembered back to high school, when Killian opened doors for me, helped me carry my books, and forced me to wear his football jersey ("I can't give it to my dates, Swan, they'll think I'm in love and I'll never be rid of them!"). I thought about all the looks I saw from him when he thought I wasn't looking. I thought about his irrational hatred of Neal and Walsh and every guy I'd ever dated. I thought it was him being an overprotective brother, but now it seemed so obvious that it was jealousy. I remembered back to when Neal disappeared and David was out of town, so Killian came to the apartment with Ben & Jerry's and a pile of DVDs. Maybe I didn't hate him as much as I thought I did. I didn't hate him at all. I loved him. And I ruined it.

Stepping out of the shower, I dressed in sweatpants and a t-shirt and brushed my wet hair into a pony tail. As I went to leave my room, heading for the kitchen for ice cream, I heard mumbled voices. Killian was back. Crap. I quietly opened my door, stepping out.

"Talk to her," David was demanding to a tired looking Killian. He looked up and spotted me. "Hey Em, I was just heading back to Mary Margaret's to talk about wedding stuff. I'll see you tomorrow, okay," he said as he walked over, giving her a big hug. "Talk to him," he whispered in my ear as we hugged.

I sighed and went to sit next to Killian on the sofa. "Please, love, I don't need to be rejected again," he said before he let a word out of my mouth.

"Who said you were going to be rejected again?" I retorted angrily. "I talked to David." His eyes suddenly looked softer and more timid, as if he was scared of what I was going to say. "And I realized that I loved you. I love you Killian. So much. I always had, I was just too stupid and stubborn to tell you." His eyes met mine, and the love and adoration pouring out from them was startling.

"I should have told you…" he mumbled as he pulled me closer to him.

"It's okay, I shouldn't have pushed you away for so long," I whispered, leaning closer to him, inhaling his scent. Instead of replying, his lips met mine. I tilted my head and deepened the kiss. And, as he picked me up and carried me to my bedroom, I realized that one night had changed everything, and I'd never been so happy with change.