My older sister has been going through a messy divorce for almost a year now, and as a result, she and her daughter moved in with me. It made sense. She wanted to get away from it all, and I live a pretty good distance from the rest of the family. I've also been through a divorce myself, so I can relate. Also, I have enough space for the extra people. Things have always been fine since they moved in. We all get along just fine. I think the only inconvenience would be my loss of "private time."

A few months ago, I had a day off from work and just hung out at home and drank by myself. This was not unusual. My sister and niece went about their normal routines. My sister was in bed early, needing to be up early for work the next day. I had been sitting in the living room drinking and watching TV. Nicole, my niece, had just finished showering, and as soon as she got out of the bathroom, I darted in there to take a piss. After that relief, I noticed that Nicole had left her clothes on the bathroom floor, including her panties. Being drunk and horny, I let my thoughts begin to wander. She is a very attractive young woman. Very pretty, with a very nice, in shape body. It didn't take long before I had picked up my nieces panties and began jerking off into them, as I sat on the closed toilet. I'm not sure how long I had been going at it, closing my eyes and picturing Nicky's perfect body, before I heard a noise at the door. I opened my eyes to see Nicky standing there, peeking in at me. In my drunken rush to get in there to pee, I hadn't even closed the door all the way. I froze.

Nicole pushed the door open, walked in, and closed it behind her. I sat still, not knowing what to do, other than to take my hand off my cock, which still had her panties dr**ed on it. She stared for a minute, standing there wearing only a towel.

"I just came back because I had forgotten my stuff in here. But it looks like you're using it now."

"I'm really sorry, Nicky." I started to say.

"It's okay." She said. "I don't mind."

I apologized again. But again she said "no really, it's okay." And laughed. "I kind of liked it, actually. You don't have to stop if you don't want to."

I sat frozen, still. I had no idea what to do. It turned out, she knew what to do.

She walked over to me, reached down, and began to jerk my cock, with her panties still on it. We locked eyes as she slowly stroked me. I couldn't even focus on the pleasure at first. All I could do was wonder "is my niece really doing this?"

She kneeled down and continued to stroke me. I knew I should stop her, but I couldn't get myself to do it. She told me to stand up, which I did. And then without another word, she took my cock in her pretty mouth. I'm let out what was I'm pretty sure a very loud groan. She began to suck my cock, and from the job she was doing, it was obvious she had done this before. I used my hand on the back of her head to push my cock into her throat from time to time, as she vigorously sucked my cock. When I was began to cum, I pulled her head, shoved my cock in and shot strand after strand into her throat. When I was done and let go, she coughed and grasped for air, while looking up at me. We stared at each other as she breathed heavily. She stood up, and she took off the towel, exposing her gorgeous body. I stared. She stepped closer to me, slowly, until we made contact.

She whispered "do you want to fuck me?"

"I really can't. You're my niece."

"I want you to fuck me." She grabbed my hands and placed them on her tits. I groped her, but still, I wasn't sure.

"Fuck me, please, Uncle Nick."

I was convinced. I grabbed my pants and pulled them back up. I walked over and opened the door. I walked over to my naked niece and picked her up, and carried her to my bedroom. I tossed her onto the bed, where she didn't waste any time. She began to finger herself as I closed and locked the door, and then undressed. I didn't bother turning off the lights. I hopped into the bed with her, and got in between her legs. We briefly kissed, as I positioned the tip of my cock on her pussy opening. I rubbed my tip against it for a bit, before shoving my cock inside her. She let out a loud noise, a mix of a moan and scream. I covered her mouth with my hand as I slowly moved in and out of her tight pussy, cramming more and more of my cock in with each thrust. We stared into each other's eyes as her pussy gripped my cock tight. I asked her if she was okay, and she went "mmm hmm", and I moved my hand off her mouth. I asked her how many times she had done this before, and she told me "I've done it a lot with my boyfriend. But his dick is tiny compared to yours."

I've never really thought of my dick as being big, lol. Above average, yeah, but not like huge or anything. But I was certainly enjoying the complement. We smiled and I continued to fuck her. I kept going slow but firm, until I was able to work my way all the way in. I was balls deep inside my niece, and she felt and looked heavenly. I put my hands on top of her head to keep her from sliding away as I started to fuck her harder and faster. She let out some moans and almost a whining type noise, and even threw in what would best be described as a grunt, followed by "fuck me, daddy."

I did my best to fuck the life out of her. Eventually, I felt myself getting close, and I needed to slow down. I backed out, leaving just the tip of my cock inside her, and I began to finger her clit. I did that for quite a while, until she started cumming. Her whole body shook and she moaned loudly. I crammed the rest of my cock back inside her, fucked her for a bit, and then pulled out and shot on her stomach. We stared at each other as I kept jerking until I was done, both with huge, dirty grins on our face. We ended up kissing for a bit, and then laid there next to each other. There was an occasional awkward giggle or two mixed in. We had a little talk... obviously, we agreed neither of us was going to say anything about it to my sister. We were both noncommittal as to whether we'd do anything else line that with each other again. We kissed goodnight, she thanked me, and she went back to her room and to sleep.

To be continued...