(This story is posted on the Literotica website. Do not repost anywhere else without the author's consent. For fans of my stories, they know what kinds of things to expect. This story deals with similar themes as the stories by wannabeboytoy, seducedHylas, and Dark Betrayal, namely cheating, betrayal, and heartbreak. If stuff like that isn't your cup of tea, then you probably shouldn't bother reading it. I do not condone any of these actions in real life. This is just a story. Enjoy.)
(Katie)
I looked back at Matt and smiled, shaking my hot ass clad in tight jeans at him. He wasn't staring at his departing wife. No, his eyes were on me, just as I hoped. I turned and walked onto the plane, with a satisfied smirk on my face. As Amanda started chatting with me, any joy I felt dropped as I realized what I was soon to be in for. I had to spend five days back home with my parents and my idiot sister. I hated having to go back home. I hate it there. I had spent 18 years of my life there and I didn't want to spend another day there. But no one else knew that. I was very good at putting up a happy façade, but inside I was seething. Despite the fact that I was the older sister, the first-born, Amanda was always treated like the golden child by our parents. Amanda could never do wrong. It was as if they recognized from an early age that she would be something special. And this offended me in a way that permanently fractured my relationship with all three of them. If a choice had to be made, they would go to Amanda, not me. They would go to her with big news and then tell me later, as if I was an afterthought. They were so supportive of every little thing she did, but they couldn't find the time to help me. I hated them.
My parents were never outwardly mean to me or anything like that. It was just that they lavished Amanda with all the attention. And in my opinion, I was the star. I was the better looking of the two, by far. I had a much better body. But just because Amanda got better grades and went to college to be a fancy lawyer, she deserved all the attention? Bullshit! Some people said that she was more book-smart, and I was more street smart, but I disagreed. I would argue that I was smarter than her in every way. Just because I never got grades doesn't mean I'm stupid. I just didn't give a shit. I never felt any motivation to try. But now I did. Now I had the drive to show them all how smart I really was.
I had made plans to become a lawyer, just like her. It wasn't because I give a shit about law or justice, because I don't. I wanted to become a lawyer to show the world I was the better sister. I would show them that I was the star. I didn't look forward to all that boring work, but I could get through it fine. I was perceptive, I was intelligent. I could read a situation easily. I would be a star lawyer. My ultimate fantasy was to meet Amanda in the courtroom, absolutely trounce her, and send her home in a bad mood. I dreamed of her coming home, walking to her bedroom, and catching me riding her husband's massive cock. I would beat her in the courtroom and the bedroom. I would show her how superior I was in every facet of life.
It might appear as if I had a lot of family issues. I probably sound like a crazy person. I'm really not. Honestly, I have pretty much moved on from that. When I was 18, I was driven nuts by my issues, but now that I am away from them all, living my own life, I don't really give them a second thought. The only time any of this stuff comes up is when I am forced to be around my family members. But on a day-to-day basis, I don't think twice about them.
But there are those times where we are all forced together. Like Amanda's wedding. Or today, when we arrived at home. That was when my issues came to the surface. My great-aunt had died, and so we were all helping get her business sorted out. So that forced us all together again. And I was bored out of my mind. Bored, and horny. I missed my boyfriend, and his big fat cock. I missed the way he pounded my tight little pussy, and my hot ass. I missed the way he mauled my huge tits with his hands. I missed the way he would insult my sister while fucking me. Did I mention my boyfriend was the man married to my sister? I couldn't help but smile every time I looked at my idiot sister and realized that her man preferred me and my body over her. Her man clearly thought I was the superior sister.
Despite the fact that I hated her and thought she was a complete fucking idiot, we got along just fine. She would ask me advice like a regular little sister would of her smarter big sister. We would chat like the friends she thought we were, but in truth I couldn't stand her. But I played the game, and as a reward it allowed me to get close enough to her so I could steal her man away from her while still maintaining her complete trust.
I got along with Dad just fine. I was not his little princess like Amanda was but he was always there for me. Mom was the only one who I had trouble getting along with. I felt like she knew how much of an evil little bitch I really was, which was strange, because she seemed like such a conservative woman on the outside. She was the typical soccer mom. She was generally bright and friendly, but at times I felt like she was more aware of how things really were. At times, I felt like there was a dark side to her too. At times, I felt like she could read me like a book and knew exactly what I was thinking. So I kept my distance from her. We both kept up appearances, but I knew that she knew how evil I was, and I'm sure she was keeping quiet about it for the sake of the family.
I was the black sheep of the family. Sometimes I wondered if I was adopted or something, but once my body developed like it did, I realized that I had inherited my body from my mother's spectacular one. Even for a woman in her 40's, her body was still great. Nice butt, great breasts, great hair, and she had still maintained her good looks. But I had to admit, my breasts were just a bit bigger and rounder, my ass was a little rounder and tighter, I was still young and hot and my hair was still fabulous looking. I was a younger, better version of my mom.
The days passed at home, and I was desperate to reunite with my man. I was a girl who was used to getting laid on a regular basis, so going on about three days without getting some dick was making me climb the walls with horniness. If I had the opportunity, I would have put on a nice, slinky dress, went downtown to a club, let myself get picked up and get some substitute cock. But unfortunately, I was kept busy here at my parent's house. Besides, Matt was a keeper. I didn't know how he would feel if he heard I had gone out to a club. He would know why, because he understands me. Because he loves me.
But he was a cheater. He was cheating on his wife, my sister. Now that his eyes had been opened to the pleasures of cheating, I was afraid that he would not be able to handle this gap in his sex life without finding someone else. I knew what kind of sluts were out there, because I was one. And sluts like me can sniff out a man down to fuck from a mile away. I sniffed it on Matt, and I'm sure other sluts could too. I just hope I could get back before any sluts could get their claws in him.
**********
(Matt)
God, I missed Katie. I missed her huge tits. I missed her gorgeous face. I missed her heart-shaped ass. I missed her pretty little cunt. I missed her asshole, which was the only hole my dick had been in that was tighter than her cunt. And I missed her filthy mouth. Katie was without a doubt the nastiest girl I had ever been with, and that's what made the sex incredible.
I wasn't used to this gap in my sex life. Ever since I started to fuck my sister-in-law, she had kept my balls constantly drained, in a way that my wife had never been able to do. I never knew what real sex was until I started hooking up with Katie. Once I experienced real fucking I realized what I had been doing with Amanda was beginner stuff. I understood now that Amanda had no idea what she was doing. She was no expert. But her sister was.
Katie was an expert in real fucking. That girl could take a cock like no other. And what made it better was that she was up for anything. Bareback fucking. Anal. Blowjobs, with swallowing. Road-head. Fucking in the back of a car. Fucking in the shower. Fucking in the bed I shared with her sister, my wife. Fucking anywhere she wanted.
Katie had taken over my life. In gratitude for her letting me do whatever I wanted with her hot body, I allowed her control in every aspect of my life. She had access to all the money I had worked so hard to earn. I had to cater my life around her schedule. I had to cater to her whims. In exchange for letting me have her hot pussy, she had free reign to order me to do whatever she wanted.
It was surprisingly freeing to have this woman running my life. It wasn't like I was her slave, or her lap dog. She asserted her ownership over me in subtle ways. She made me put a picture of her bare tits as the wallpaper on my computer. All the pictures of my wife on my desk were replaced with pictures of her posing cutely. She asked me to buy her stuff, and she threatened to withhold her tight pussy until I did so. But it never reached that point. I would do anything for her tight pussy. She made me think of her whenever I was forced to have sex with my wife but that wasn't something she had to force me to do. It would be difficult to not imagine her perfect body when with someone else, especially someone who was not as well developed.
It felt strange to not have her guiding hand in my life. Sure, she had left me orders. No jacking off until she gets back. She wanted me to save up my best for her. I could easily disregard that order and she would probably never know. But I felt compelled to obey her. This made me smile. My sister-in-law was in control of when I could cum. She truly owned me.
My balls felt swollen. I wasn't used to going this long without getting some. I was used to cumming every few hours now, usually in her tight snatch. I wondered what my coworkers thought when the door to my office locked and the blinds closed after this big titted slut visited me in my office. I wondered if they knew I was getting some from that hot-bodied skank.
I was craving sex. I felt tense and jittery. I needed to be taken care of. I needed my sister-in-law. I needed to cum.
