With what happened in this tale everything in my life changed. I had been married 7 years, worked 3 am til about 3 pm, lots of OT. With these hours, i would always be in bed by 6. Picked up wife's little 11yo sis on the way home on Wed. to have her with us til Sun. evening. Dinner over I went to bed, wife and kids went to church. I didn't know little sis stayed home. I always sleep nude, and when I was awaken, still in a foggy state, there was a naked person on top of me putting my dick into her pussy. Thinking my wife was wanting to fuck, I started pushingb up, but found it very hard to get inside. As my dick started to slide in a little, I started waking up more, and some of the fog cleared, Now I knew it wasn't my wife, but little sis. She now knew I was awake enough to know it was her, and she dropped herself alkl the way onto my almost 7 inches and was in great pain. Awake now, I asked why and she said I have been coming down the hall and watching you two fuck for over a year now, and wanted to know what it felt like. She then said it hurts, why would sis want to do this. Now I have to decide something. Do I fuck this little girl or not. I had a vacitomy 3 months ago, and just had my sperm test and can,t get her pg. I decided to finish what she started. Long story short, she ended up loving it and we have been fucking now for years.