Replaced by her sister [MF] [cheat]

So, my girlfriend was out of town. In fact she was out of the entire country. She had been gone six weeks at the time and wasn’t going to be back for another six. She had been accepted for an Erasmus term which meant she got to spend twelve weeks studying in Italy. I was delighted for her. The only issue I had with the plan was that it meant there would be no sex for almost three months. I tried to keep busy so my mind would be occupied and I had been ‘sorting myself out’ but the longer time went on the more difficult it got and things that would make me horny seemed to be seeking me out.

A couple of the lads had arrived back in town. We had planned our holidays so that we could have the time off together to catch up. Since college finished last year we had been growing steadily apart so when we had an opportunity to get together we went all out. We met back in our local and sat in our usual spot. The conversation of turned from work to sport to absent friends and family to women and memories from school. The lights flashed and before we knew it last call was to be ordered. We all decided that the night was still young so we moved on to a club. It was a student night which meant the place was crawling with people but after a few years going through those doors we had gotten to know the door man who just waved us through.

It had been a long time since I had drank shots and just as long since I had danced in a club but tonight I was doing both. Some of the lads were wild on the dance-floor. The chatty ones had talked their way into a group of strangers with the help of some liquid confidence. One of my friends had one too many and we figured it would be best to call him a cab. The single boys were on a roll that night, each of them finding a girl on the dance-floor and a corner of the club for a little privacy. With my perception dropping with every shot I didn’t even notice that I had been left by myself on the dance-floor.

Well, I wasn’t entirely alone. A young brunette in a silver dress danced alone in front of me. She had been dancing with the girls who were now sitting with my friends. I couldn’t help but stare at her hips swaying back and forth to the beat of the music. When I eventually raised my eyes I saw that she was looking back at me over her left shoulder. She threw me a cute smile and turned around to me. We danced together for a short time before somebody bumped into the back of her or into the back of me. Whichever happened all I knew was our faces were just inches apart. I could smell her perfume as she threw her head back and placed her arms on my shoulders. I felt her thighs grind up the leg of my jeans until her dress lifted up slightly. My cock was pressed to the front of my pants at this stage but I felt that it had been like that for the past six weeks.

In my peripheral vision I saw somebody trying to make eye contact with me. I turned and locked eyes with Amy. My girlfriend’s younger sister. She was by the entrance as if she had just arrived. She shot me an unknown expression and walked away in the direction of the bar. I never sobered up quicker in my life. I caught this girl by the hips and pushed past her in the direction Amy went. Shit, what had she seen? What was I doing? Was she contacting Claire right now?

I found her at the bar counter with her back to me. Her straight, blonde hair fell softly on her naked back. The baby blue dress she was wearing hugged her body tightly and what a body it was. Her tits were bigger than her older sisters. They were at least a D-cup. Her ass was not quite as nice but held a small firm shape. Her long, athletic legs were even more defined tonight than usual because of her high heels. I had always thought she was quite sexy and I was clearly not the only one because she got a lot of attention from boys.

It was her eyes that really made me like her though. She had large, light-blue eyes that always had a certain look in them. It was a look she shared with her sister except I only saw it in Claire’s eyes when she was looking up from her knees with the head of my cock in her mouth. A look that said “I know I’m a naughty girl.” Amy always had this look and it made me really curious about fucking her.

“Hey Amy,” I said putting a hand on her back.

“Heya,” she answered with a hug “I haven’t seen you in ages. Just because Claire’s gone doesn’t mean we can’t hang out.”

I bought us both a drink and we sat at a table to catch up. She didn’t bring up the girl from the dance-floor and she didn’t seem pissed so maybe she hadn’t seen anything. I wasn’t entirely convinced.

I hadn’t noticed how low cut her dress was until we sat down. You could see she wasn’t wearing a bra and her tits looked ready the burst out of the dress. After a bit of chat about frivolous things I noticed her getting distracted by something over my shoulder.

“Oh shit…” I saw her mouth.

“What is it?” I asked.

“Well do you remember Tom?”

“Your ex?” I had never met him but Claire had spent many nights on the phone consoling her sister both before and after the break up. It was a very messy affair.

“Yeah, well he’s just after walking in with some slut. He knew I’d be here tonight. Definitely just trying to make me jealous. Ugh, look at her! You can tell it’s a push-up from here and…”

“Ok,” I chuckled “so what are you going to do about it?”

She sulked for a moment before a look of realisation flashed across her face.

“Do me a favour.” She wasn’t asking. “Pretend to be here with me tonight. Like a new boyfriend or something. You don’t have to do anything. Just dance with me and hold my hand and stuff.”

I wasn’t sure about it. I had seen the way Amy danced with boys. She must have seen the indecision on my face.

“Come on,” she pleaded “you’ll be doing me a big favour and it’ll mean there won’t be any other girls tempting you here tonight.”

She winked and gave a cheeky smile when she said this last part. What did she mean by that? Was she referring to the girl on the dance-floor or was it just a coincidence. If she had seen something then I thought it best to not annoy her while she wasn’t mentioning it. I agreed.

Amy jumped up and grabbed my hand, pulling me towards to dance-floor. We danced for a few songs until she leaned in and whispered in my ear “That’s Tom, by the DJ.” I saw the couple she was gesturing to. The girl he was with looked very drunk and had a skirt on that only covered half her ass. From where we were dancing he could definitely see us and had made sure we could see them. What a douchebag. “Come on then,” I said to Amy “let’s make him jealous.” She wrapped her arms around my neck and started swinging her hips to the side. I put my hands on her waist and pulled her in closer. “Is he looking?” she asked. I glanced quickly over and Tom was staring furiously at his ex. “Can’t stop staring,” I replied. I really didn’t like the look of this guy and I had heard how upset he had made Amy. I really wanted to annoy him. At least that’s what I told myself but truth be told my cock was doing most of my thinking at that stage. Without thinking I grabbed her ass in my right hand and pulled her into me. Her eyes widened and then with a smile she asked “Is he angry?” I didn’t need to answer because he turned around and saw for herself. My mind was going a hundred miles an hour. Amy was rubbing her ass all over my crotch and making my cock rock hard. He left arm reached up and she ran her fingers through my hair all the while I was staring over her shoulder and watching her tits bouncing. It had been so long since I had sex I felt I could have came right there and then. Amy dropped down low and then slowly came back up pressing her ass hard into the front of my jeans.

I was like a wild animal at this stage. I spun her around and pulled her in close so her tits flattened against my chest. I could feel her breathing heavily and I stared into her eyes and saw that look which I took to mean that she was dripping between her legs. She put on hand on the back of my head and the other on the back of my neck. There was no need to explain anymore. Her mouth found mine a second later and I tasted her tongue. I grabbed her ass with both hands a squeezed her little cheeks. She held my lower lip between her teeth and I felt her hand slip down and hold my cock through my pants. I stuck my tongue into her mouth again and she squeezed my shaft. I had to have her.

I lead her through the crowd until I found a fire exit. We burst out into a deserted corridor that I imagined would only be used in the case of an emergency. I pushed her up against the wall and we began kissing again. My hands found the bottom of her dress and I pulled it up exposing her ass. As my hand fell between her legs I expected to feel lace but instead was met with flesh. I smiled and so did she biting her lower lip. “Don’t want to slow things down,” she joked. Her pussy was soaking wet and my fingers slid inside her with almost no resistance whatsoever. First my middle finger, then my ring. I could hear her moans now as the music had become muffled. I pushed them in as far as they would go and began massaging her clit with my thumb. She pulled the front of her dress to the sides and pinched her nipples between her forefinger and thumb. Her moans grew loud and more intense. I was now rubbing her clit faster and pulling my two fingers back towards myself trying to find her g-spot. One of her hands grabbed the back of my neck hard and I knew she was close. I rubbed her clit fiercely and the energy drained from her entire body with one loud groan. She held herself up by holding onto me. She was sweating and out of breath. She looked up at me and I knew we weren’t finished.

“Come back with me,” she said.

No more than two minutes later we were outside and waving down a taxi. She gave the address of the house she was renting for the college term as we sat into the back. As soon as we took off we were kissing again. I didn’t want to draw attention so I pulled back slightly. It was as though Amy was in a trance. Her hand reached for my zipper and started to open my pants.

“What are you doing?” I asked in a whisper.

She didn’t answer. Instead she just giggled and pulled my cock out through my fly. There was no hesitation from her. She opened her mouth and tried to swallow the entire thing. My eight inches were slightly too much for her. It had been so long since anybody had touched my cock besides myself that I almost blew my load. The only thing that stopped me was the concern that the driver would discover what was happening in the back seat of his taxi. Amy took my shaft in one hand and swirled her tongue around the head. She flicked her tongue over the hole before taking the head into her mouth. Her saliva began to drip from her mouth and was now running down the underside of my cock. She caught it with her tongue and ran it flat up my length. She started to bob her head up and down slowly and pumped the shaft with her hand. She twisted her hand slightly and worked as much as she could take in between her lips. Every time my head hit the back of her throat felt incredible. Her pace quickened and I pulled her hair up into a ponytail. I bucked my hips and began to fuck her mouth. I knew I was a about to cum and Amy knew it too. I could feel it stirring in my balls and she was pumping my cock wildly into her mouth. I tried to save the moment for as long as I could because after such a drought I knew it was going to be amazing. When I reached the point of no return I pushed down on the back of Amy’s head and emptied my load down her throat. She didn’t gag and I tried my hardest not to make a sound. After I released my grip she made sure she squeezed every drop out and sat up.

I put my cock back in my pants and I heard Amy tell the cab driver which house number. Claire had never swallowed my cum before and the fact the Amy just had turned my on even more. I was getting hard again by the time I was getting out of the taxi.

“Is there anyone else here?” I asked as Amy unlocked the door.

“No, they all went home for the weekend. It would have been just me tonight. All alone.” She somehow managed to make everything sound sexy.

She ran up the stairs undressing as she went. She kicked her heels off and pulled her dress over her head. By the time she reached the top she was completely naked. She turned around. “Whenever you’re ready,” she teased and disappeared into a bedroom.

For a very brief moment I re-evaluated the situation. I was about to go upstairs and fuck my girlfriend’s little sister. I felt so guilty but the arousal was taking priority. She had already sucked my cock so I was already in trouble.

I started up the stairs and followed suit by undressing as I went. I pushed the door open and Amy sat upright on her bed, her legs to one side and curled up underneath her. Her hair was in a mess and hanging between her teeth was a condom packet. If my cock was half limp before it was hard as steel now. As I marched over to the bed she got onto all fours and crawled towards me. She tore the packet open and took out the condom. With her other hand she grabbed my cock and began to slowly stroke it.

“I have listened to you fucking Claire you know. I could always hear her moaning even when you two were trying to be quiet. She always looked so happy in the mornings when you stayed the night so I knew you must have been a good fuck.”

Her dirty talk was driving me mad.

“Every now and then I would pretend to be clueless about something and ask her how it works just to get some details of how you fuck her. I always wondered did you know how much you turned me on. Did you ever think that whenever we would go to the beach or you would take a shower in our house or made my sister cum when you thought the house was empty that I would have to fuck myself afterwards pretending it was who doing it?”

As she said this she rolled the condom onto my cock. I had no idea that she had ever looked at me this way. She turned around and stuck her ass up in the air. She put her face to the bed and her palms flat down. I could see the drops of wetness glistening between her pussy lips.

She looked back at me and said two words.

“Take me.”

I ran my head up and down her pussy lips. I wanted to tease her before giving her what she wanted. I moved excruciatingly slowly up and down, up and down. I resisted the urge to just pound it into her because I knew it would make the initial entry more intense.

“Ooooh, fuck,” she moaned “just fuck me, just fuck me.”

Not just yet. I rubbed her quicker with my dick.

“Holy shit, I’m so wet. Oooooooohhh that feels so good. Oh my god, please fuck me. Oh god, oh god.”

I could see her hands grabbing fistfuls of the covers.

“Oh fuck, oh fuck I’m so close. I’m gonna- oooooohhhh!”

I thrust into her. Her wetness allowed me to push my whole member inside her. The force made her lift her head up of the bed and arch her back.

“Oooooohhhhhhh fuuuuuucccckkk! I’m cuuuuummmmminngg!” she screamed in orgasm.

I caught the back of her head and pushed it back down. I started to thrust in and out of her. Each time I took my entire cock out except for the head before shoving the whole thing back inside her tight cunt. I hooked my hands underneath her hips and began to fuck her hard.

“Oh! Oh! Oh! Oh! That. Feels. So. Good! Fuck. Me. Harder!” each word coming as I slammed my shaft into her.

Her petite frame made it easy for me to manhandle her and she was loving it. I pulled her pussy back onto my cock and with every thrust another moan. The sound of flesh hitting flesh filled the room as I fucked my girlfriend’s sister. I could feel her pussy lips tightening around my cock and I knew she was about to cum again. Her hand was rubbing her clit at great speed and I wanted to hold out so that she could finish. I wasn’t sure if I could because I could feel myself getting close.

“I’m going to cum,” I gasped breathless.

“Cum for me,” she moaned back “Do it!”

I picked up my pace and started to go as fast as I could. The tips of her fingers were brushing the underside of my cock. He moans were getting louder and she more out of breath. With one final release her lips squeezed around my cock tightly. This was too much for me and I came hard. I pulled her hips back into me which I don’t think she was expecting because she let out a little gasp. Then I pushed her off my cock and we both collapsed onto the bed.

After regaining her breath she told me I could spend the night. I agreed even though my mind was a whirlwind after what had just happened.

“Well I think we definitely made Tom jealous,” she giggled before we both went to sleep.

Source: reddit.com/r/eroticliterature/comments/3bfqw3/replaced_by_her_sister_mf_cheat