The next few days were comparatively uneventful. I didn't see my sister, and only spoke with her briefly. Each time we spoke, there was no mention of our new relationship. That made it even more exciting.
I was afraid that I would be overcome with guilt. After all, I had spent the better part of a day having wild sex with a hot, young woman. Aside from the notion of my 'list', I had not considered myself a cheater.
Oddly, I still didn't. Having sex with my sister didn't seem like cheating to me. It was, I know, but I didn't feel guilty at all. I was still in love with Lana, and would be a good husband. Well, as good as a husband can be when he's having an incredible sexual relationship with his sister.
I found myself fairly occupied for the first half of the next week. I was a freelance consultant, so at times there would be no work, and at others there would be too much. I was working 11 and 12 hour days, luckily not worried about Lana, who would be at her mother's being looked after.
Even being so busy, I found my mind constantly looking forward to Friday. I was trying to imagine what Lisa had in store for me. There were several things I was hoping for. First was the video; she had promised to show me a video of her friend Alyssa fucking herself with a dildo, apparently pretending it was me. Next was her ass; she said I could fuck her ass, but didn't say when. Last, I wanted to bury myself in her sweet pussy and fill her with my cum. Again, she said I could, but didn't say when. I was sure, though, that Friday would be mind-blowing.
It was Wednesday evening, a little before 7pm, when there was a knock on my office door. My assistant had gone home an hour ago, so I got up from my desk, walked to the outer office and opened the door.
To my absolute surprise, there stood Lisa. She was wearing a pair of very tight, very low cut jeans, and a t-shirt that seemed about 6 sizes too small for her. She smiled, handed me a heavy bag full of Chinese food, and walked past me into my office. I watched her ass sway as she walked, and felt myself growing hard.
She sat down in one of the leather chairs across from my desk.
"Lana told me you were working late," she said. "She suggested I bring you some take out, because otherwise you wouldn't eat."
"That's probably true," I said. I rarely ate properly when I was working. I set the bag of food on my desk and sat in my chair, facing Lisa. She was smiling devishly.
"Is food the only thing you brought?" I asked. She laughed.
"Nope," she said. She just sat there, her legs crossed, staring at me.
"Well?" I said.
"Well, what?" she answered.
"What else did you bring?"
"I think you can figure that out," she said. I was hoping I would, and quickly. I wanted to tell her to stand up and take off her pants, but was feeling nervous. Then I remembered our last conversation, and decided to give it a shot.
"Stand up," I said. She did, her smile growing. I was playing her game and she loved it.
"Turn around," I told her. She slowly turned.
"Take off your pants," I said. She unbuttoned her jeans, then hooked a thumb above each hip and very slowly slid them over her firm ass. They dropped soundlessly to the floor. I was reminded of the first night we fucked, of her silhouette against the nighttime city lights. I felt like I was going to burst out of my pants.
"Kneel on the chair," I said, getting up. As she climbed onto the chair, I walked around the desk, my pants already unbuttoned and falling to the floor. Lisa was now kneeling on the chair, her perfect ass facing me. I came up behind her, and with one arm around her waist, pusher her forward until she was leaning over the back of the chair. My cock was conveniently nestled between her ass cheeks. I reached down and guided it to her already dripping entrance. With one thrust, I was inside her.
I didn't start slow, instead fucking her with deep, hard strokes. She grunted each time I pushed into her. I had my hands on her hips, pulling her hard against me with every thrust.
It had been days since I last came, but I found myself with amazing staying power. I kept pounding my sister's pussy, and she was getting more and more vocal with each deep stroke. She started to whimper.
"God, I love fucking you," I said. This caused her to cry out.
"Tell me you love it," I said.
"I love it," she said quietly.
"What do you love?" I asked.
"I love you fucking me," she said. "I love your big thick cock inside me. I love being yours, I love when you take me. I want you to fuck me forever." Each word was separated by a sharp gasp.
"Tell me you want me to cum inside you," I said.
"Oh, fuck, I want you to cum inside me," she said. "But not yet. Not yet, my love. Soon, though, I promise. Oh god, David, I'm going to cum."
I increased the pace of my thrusts, fucking her with abandon. Her impending orgasm triggered my own. I held back, continuing my pace as she came violently. My hands on her hips were the only thing keeping me inside her. As her thrashing died down, I felt myself pass the point of no return.
"I'm going to cum," I said. I pulled out of her pussy and quickly moved to the front of the chair. I pushed my cock into her waiting mouth. She grabbed my ass with both hands and pulled me completely into her mouth. I came hard, spewing my cum deep into her throat. She managed to swallow almost all of it, with a little stream of cum trickling from one corner of her mouth.
"Jesus, David," she said. "When was the last time you came? There must've been two gallons." She wiped her mouth with her finger then licked it.
"I've had my dinner," she said, smiling. "Why don't you have yours?" I thought she was suggesting I return the favour, but she meant the Chinese food. She stood, not bothering to put her pants back on, and leaned over my desk. As she arranged and opened the containers, I was treated to a view of her ass and ravaged pussy. My cock had only managed to get to half-erect, and now the view in front of me was making it come back to life.
I walked behind Lisa and knelt down, putting her ass right in front of my face. She stopped, standing motionless, as I spread her asscheeks, exposing her pink asshole. Again, I was powerless to stop, and my tongue found her little hole. She whimpered and opened her legs.
As I tongued her ass, I reached one hand around started to finger her clit. Within about 10 seconds, her legs started to buckle and she came, hard.
"Fuck me," she gasped. "How the fuck do you make me cum so quickly?"
"I don't know, but I love it," I said. I stood, my now hard penis poking against her ass. Once again, I spread her cheeks. This time, I used my hand to rub my cockhead against her puckered little hole. She gasped but didn't stop me.
I pushed slowly, and watched in amazement as my head slipped inside her ass. This seemed to bring her back to reality, and she quickly pulled away and turned around.
"You naughty boy," she said. "Trying to break the rules. Just for that you don't get to cum again." I felt crushed. I was literally inches away from being buried in my sisters's ass. My cock was about to burst, and now she wasn't going to help me cum. I decided to see how dominant she wanted me to be.
I stepped forward, and lifted her ass onto the desk. I wedged myself between her legs. She made a show of trying to stop me, but not a serious one.
"I'm going to cum again," I said. "And so are you." She was grinning at me wildly as I guided myself into her. I slid into her smoothly. She closed her eyes and leaned back.
