I had just discovered that my kid sister schemed to get me to have sex with her because she wanted to have my baby. She had been charting her ovulation for the past several months, and knew that she was fertile this particular weekend, so she got me back to her apartment for sex. After discovering her plan, I confronted Cassie in the kitchen, where she was preparing dinner. Cassie, still nude, slowly walked over to me and placed her hands on my shoulders.
"You remember a few minutes ago when you asked what I was wondering?" She asked.
"Yes, but what does that have to do with this?"
"I was wondering what our baby is going to look like."
"Our baby? Christ, Cassie, we can't fucking have a fucking baby!"
"If that test strip is right, then we're going to; and I hope its a boy and looks just like you. Now, sit down and enjoy your lasagna, you're going to be eating more of it in the future when we're living together; and after dinner, were fucking again just to make sure."
I was shocked, but for some inexplicable reason found this whole episode to be a turn on, and immediately came down from my anger.
"We need to talk about this, Cassie."
"Tell me that you don't love me, Tim. Just tell me that you don't love me, and we'll end it. I'll take a pill or something and end it, but I thought you'd want this as much as I do. Don't you want to have a baby with me?"
"Yeah, Cassie, I enjoy being with you; but a baby? What are you thinking?"
"I've noticed the way you've looked at me, Tim, and it's not the way a brother usually looks at a sister, and it didn't take you long to have sex with me. You didn't even ask if I was on birth control. You want this as much as I do, admit it."
She had me there. I enjoyed being with her, that's for sure; but to have a baby together, and to live together? That's a big step, one that I'm not sure I'm ready for.
"I don't know what to say, Cassie. Yeah, I loved having sex with you; but a baby? What would we tell people?"
"We wouldn't have to tell anyone it's yours. I could say that I got knocked up by someone at a party or something, it could be our little secret."
"It's not easy to keep a baby a secret, Cassie. What would dad say? What about your friends?"
"Niki thinks I'm having a new boyfriend over for the weekend, she doesn't know its you, I didn't tell her that. I could just say that I got pregnant from him or something, and not tell her who it was."
"That would explain the baby but what about us? What do we tell people about us?"
"You could be the good brother who takes care of his sister. I thought that I could move in with you, and you'd just be taking care of me."
"Dad will totally freak, Cassie. What are we going to tell him?"
"I'll just tell him that I got pregnant through a one night stand; anything like that. You know he doesn't believe in abortion. He'd want me to deliver it and then give it up for adoption. Then, maybe we could just raise it as our own or something."
"You're serious about this, aren't you? You want to have my baby and you want us to live together, like, permanently? Is this really something you want?"
"It's all I ever think about, Tim. I want to be with you. If you don't want the baby, then I'll have an abortion and wont tell anyone; nobody has to know. I just thought you'd be excited about it," she said as she started to cry.
This all obviously came on me too fast, and I wasn't sure what to say. Every time we went out together, even last night, I wished it were a real date. I've always thought that if she weren't my sister I would date her, but to live together?
"Don't cry, Cassie. We'll work this out somehow, but I'm not sure how people are gonna take this baby thing. Are you sure you're pregnant?"
"No, but I know that I'm fertile, so there's a good chance I could be."
"But you may not be, right?"
"Don't you want me to be?"
"I don't know, this all happened so quick. I'll need to give it some thought, and we'd have to come up with a good explanation if you are."
"I've wanted to live with you, but didn't know how you felt about it, and what other people might think if we were living together. I thought that if I got pregnant, then you could say that you're just taking care of me or something, and we could live in your apartment, and then we could raise out child together. I guess maybe I didn't think this through all the way."
I stood there for several minutes, looking at my nude sister standing before me, and thought again about the two of us living together. If we were already living together and she got pregnant, that would be difficult to explain; but this way, it could be the pregnancy that causes us to live together. People might suspect something, but they'd never know for sure.
"Even if you're pregnant, we would have some time to work this out, wouldn't we?"
"Yeah. If I'm pregnant, we would still have some time to figure things out. If I'm not, we could still work on that. I do want to live with you, and I do want to have your baby, Tim. It's what I've always wanted. I've never wanted anyone but you, and I've never been with anyone but you."
I pulled her nude body against mine and held her for several minutes. Yeah, her body against mine felt so good. I realized that I did want her.
"Why don't we eat dinner and talk about it, Tim?"
I wanted to eat dinner, but I didn't want to let her go, either. She felt so good; we felt so good together.
"All right then, lets eat, and then we'll talk this over some more."
"Good," she said as she turned and placed the lasagna on the table. We sat down and ate, trying to talk through the details.
We decided that we both wanted the same thing, to be together, and this might be a way to bring that about. I still wasn't certain about the baby thing, but she did agree to an abortion if we thought it wouldn't work out.
After we finished eating and doing the dishes, Cassie suggested that we go back to bed, and I agreed. Yeah, I was hooked on my sister, and the thought of the two of us living together and having a child was sinking in.
Cassie led me to the bedroom and dropped back on the bed, spreading her legs for me. I knelt down between them and started kissing her pussy and rubbing her breasts. The thought of making a baby with my sister was now a turn on for me, and I wanted her more than ever.
The taste of her pussy was something I could easily get used to, god she tasted so good. I started licking her harder and driving my tongue deep inside of my sister as far as I possibly could, tasting her sweet juices. I realized just how much we really wanted each other, and I wanted this weekend to last forever.
Cassie started squirming beneath me, and brought her hands to the back of my head, pressing my mouth harder against her crotch.
"God, eat me, Tim; that feels so good. Keep eating me."
I really didn't need her encouragement, but the way she was talking did excite me, so I ate her out, licking her outer area and sliding my tongue deep inside of her. I moved my hands down to her thighs and started rubbing them as I licked her pussy, grinding my face into her.
Cassie was getting more excited as I continued eating her. After a few minutes she suggested we get in a sixty-nine position so she could suck my hard cock, so I rolled over on my back, and Cassie climbed on top of me, placing her crotch directly above my face, and taking my hard cock into her mouth. I can't describe how good it felt to have my sister's mouth on my cock as she sucked me. I started bucking my hips up and down, driving my cock deeper down her throat, and she took it all the way, gagging some, but still took my entire length inside her mouth and throat.
I wet my finger, and while sucking at her pussy, started rubbing her pink pucker, which was driving her wild. I slid one finger into her ass, which she must have found stimulating, because she started sucking my cock harder, while yelling for me to eat her pussy and finger her. I slid in another finger while lapping away at her wet pussy.
Cassie and I were lost in our lust of one another, giving each other pleasure we never thought possible, but had each always wanted from each other. I continued eating my sister and fingering her ass, until I thought I was going to cum. I started bucking harder into her mouth.
Cassie finally stopped sucking me and said, "I can't get pregnant if you cum in my mouth. If you want this baby as much as I do, brother, fuck me. Oh god, please fuck me."
I immediately pulled Cassie down beside me, kissed her hard, and then brought the head of my cock to the entrance of her sex.
"Do you want to make a baby?" She asked.
"Oh fuck yes I want to make a baby," I said as I slid into her all the way.
"Then fuck me, Tim, fuck your sister and make a baby inside of her," she shouted.
I bought Cassie's right leg up over my hip and started fucking her hard. Now, the thought of having a baby with her was turning me on, and I fucked her harder than I had all weekend.
I looked down and the sight of my cock being buried inside of my sister was awesome. I wanted her. Yeah, I wanted her, and I wanted to make a baby with her.
Cassie rolled over on her stomach and asked me to fuck her from behind, so I lifted her up on her knees, mounted her and started fucking her from this angle, which was an entirely different feeling than before. I felt her beautiful ass as we made passionate love, running my fingers along her pucker. Cassie started thrusting back to meet me every time I thrust forward, causing my balls to slap against her.
After several minutes in this position, Cassie rolled over on her back again, grabbed my cock and slid it back into her, asking me to fuck her hard, which I did. I lifted her legs over my shoulders and rubbed her breasts as we made love. The sight of my sister's nude body beneath me was something I've always wanted, and we continued making love for several more minutes, until Cassie shouted that she was going to cum. I could feel the walls of her vagina contracting around my cock, milking me. I continued driving into her harder, until she came, and she came hard.
