This happened a long time ago when my ex was just starting a job and her younger sister decided to stay with us for about a month. She was attending redlands in california and for the summer she came back home to Hawaii for fun and relaxation. She brought her boyfriend with her and they both slept in the living since we only had a one bedroom apt. My ex's sister is a taller version of her but is a real brat.
Anyway, long story short, one morning I was not feeling well and decided to stay home and rest. My ex left for work, her sister's bf decided to go to the gym for a workout and she just hung out at the apt. I kept the bedroom door closed and remained in bed, I sleep in the nude and only with a sheet to cover me due to the warm weather we normally have. I'm not sure but I thought I heard a noise and opened my eyes just in time to see the bathroom/shower door closed. It was in our bedroom so we had to share use of the shower with them when they stayed with us. I drifted off back to sleep and at one point I thought I felt a hand touch my back and shoulders. I moved, opened my eyes and looked behind me but no one was there and again I thought I saw the shower door close. It was about mid-morning and the sun hits the bed through the window. Normally I just flip the sheets off of me and lay in bed, this was nothing new to me so I never gave it a second thought. All I remember is that my cock was in a very warm place and as I awoke, it became even more pleasurable.
I then realized that it was probably my sister-in-law sucking my cock but I was afraid to say anything, I did not want her to stop but I also did not want her to think that I was awake. She stopped sucking and I felt the bed move slightly. I lay there with my eyes closed, my cock semi-erect and filled with cum. I tossed for a minute and thought that maybe she realized I was starting to wake up so she did stop and that was that. I turned towards the edge of the bed and closed my eyes. I dont know how long this time but I felt it again. Sucking on my cock as I lay there on my side. She must have been sitting at the edge of the bed waiting for me to fall asleep again. As I got hard she slowed down and I felt my cock cool as her mouth left it exposed to the air.
I figured that she would just suck my cock and soon enough she would leave to go out. I turned and lay on my back with my cock laying semi on my thigh. I dozed off again and this time, I woke up with her on top of me covered with my ex's robe and facing away from me. She had just slid down on my cock and I reached down and grabbed her hips. As soon as I did that I felt her body go rigid and I had to think quickly. I said oh babe.. I am so glad u came home. I am so horny. Let me fuck you and I can go back to sleep easily. I guess as dumb as it sounded, she sat down on me and we started fucking. She kept herself covered but her moans were very loud. At one point I told her I would love to pinch her nipples while she rode me. She leaned back and I reached around her to massage her tits. Oh yes, it was not my wife, her breasts felt fuller than my wife so I knew I was fucking my sister in law. It got me hard and she quickly started to fuck me harder. I told her I was ready to cum and asked if it was okay to cum inside her pussy since I was not wearing a condom. She moaned louder and I exploded in her. She thrashed about and her legs stiffened as she came hard on top of me. I let her hips go and just lay back. I told her, you were so good this morning, I needed that. And then i added, its a good thing your sister is not here or she would have heard us from the living room. I then leaned back again and closed my eyes and went back to sleep.