I'm 18 now but this happened about 6 years ago when I was 12. I was at my girl friend's house for a sleepover and we were in her living room sitting on the floor and watching TV, talking about guys, normal girl sleepover stuff. Then, about a half an hour later, her older brother came into the room and sat down on the couch behind us. At the time I had had a HUGE crush on her brother who was 14 at the time and I think he could kind of tell. After an hour or so of watching TV, my friend had completely passed out, so I, not being tired at all, got up on the couch and stayed up and talked to her brother for a while. We talked about movies we had seen and the sports we played etc, and we eventually got onto the topic of sex. He asked me if I had ever had sex and I told him I hadn't and neither had he. All I had really done at this point was make out with a number of guys and gave like 2 or 3 hand jobs. We were quiet for a minute or two and then he asked me to sit on his lap. I looked down at my friend on the floor and she was in a deep sleep so I went for it. I sat on his lap and he held me there with his left arm wrapped around my waist and his right arm feeling up all over my thighs which, in time, found it's way into my pajama bottoms. I was speechless and felt extremely horny. He rubbed his hand up and down my pussy and I told him to keep rubbing at the top (which I later found out was called my clit). I could feel a large bulge in his pants so I rocked back and forth lightly on top of it. He rubbed my clit for what seemed like hours and I was beginning to get very very wet. He then moved his 2 fingers down to my hole and inserted his fingers in. At first it hurt but after a while I was getting used to the feeling. I stuck my hand in my pajamas and moved his hand back up to the top and he understood that I liked it better when he touched there. Well, the combination between my cum on his fingers which were rubbing my clit was amazing and within minutes I was shuddering and shaking and trying my hardest to keep my moans in so I didn't wake up my friend. I fell backwards and laid my head on his neck for a few minutes and then he whispered to me "Now you can say you've been fingered" and left the living room. Once I could hear him close the door to his room I woke my friend up and told her we should probably go to bed. I will never forget that night!