I do feel bad and ashamed of myself for what I have been doing for the last 15 months. When I graduated high school my uncle got me a job at an office in the city. I got an apartment and it was tough to make ends meet because I couldn't afford the rent. I made friends with Jerry, one of the guys I worked with who was around my age. He lived with his mother and after telling him how I couldn't afford my apartment rent offered to let me rent the spare room at his mother's house. I moved in two years ago and she is a very sweet and attractive women. Jerry was unhappy with his job and after a few months enlisted in the Navy. I knew his mother walked in her sleep sometimes but my room was in the attic and I only saw her doing it twice. She is short so Jerry put high locks on all the doors to prevent her from going out or going in the garage before he went away. He told me if she did walk in her sleep to let her be or try to guide her back to her room. I'm not sure how much she did it but when I moved from the attic room to Jerry's old room it seemed to happen often. She was taking a pill called Klonopin which she didn't like to take since it seemed to knock her out and make her feel lousey in the mornings. She is 42 years old as of last May and like I said an attractive women with a good figure. At first I didn't interact with her but one night I was at the kitchen table. It was only around midnight and right away I knew she was sleep walking. Her pajama top was particially open and I could clearly se her left breast. I just sat looking at her for awhile and admit to getting an erection even though she is only a few years younger than my mom. At one point she just stopped and stared at the sink. There was no response when I spoke to her and she didn't even look at me. I just kept looking at her and her breast for a while and finally stood up and slowly unbuttoned her pajama top and took it off of her. She just walked around the house topless for a short time and eventually went back into her room as I followed her around. She laid back in bed without her top and I don't know what possesed me but I pulled her pajama bottoms off. She had no panties on and I just kept looking at her body. I never touched her that first time but did undress and masturbate. I just left her pajamas on the chair, closed the door and turned off the lights when I left. This goes on at least once and sometimes twice a week since then. She obviously has no reccollection of it and I slowly took more liberties with her each time. I have been able to undress her and a few times she has been topless before coming out of her bedroom. She asked me a few times if I heard her walking around at night but I always tell her I didn't. After a few months, but so far only twelve times, I convinced her to take extra Klonopin before bedtime. It usually takes a half hour or so before she is in a deep sleep. I make noise and knock on her door for awhile to make sure she is out cold. I go in the room naked and even shake her a bit to make sure she doesn't wake up. I then undress her and fondle her breasts and finger her. The last eight times I did this I performed oral sex on her and know for sure she was aroused by it and was very wet. I only know for sure she orgasmed six times but think maybe all eight times. I use her hand to masturbate myself and have put my penis on her lips each time. So far I've been afraid to try intercouse with her and feel my weight would cause her to wake. Most of the time she just sleep walks and most of the time I am able to undress her. I just let her walk around naked as long as she wants and sometimes I am naked and jerking off as I follow her. When she gets back in bed I simply leave her pajamas or nightgown on her chair. She only wears panties when she has a nightgown on and never when shes wearing PJ's. I always shut her door tightly, turn off the lights and sometimes cover her with her sheet. Jerry calls at least once a week and I just tell him everything is fine and I do make sure the top locks are in place every night. He knows I'm sleeping in his room now but doesn't object and I tell him his mother is taking the Klonopin every night which she really isn't. I think she tells him the same thing just so he won't worry about her. A couple months ago I began telling her I heard her walking in her sleep. I started doing that beleiving I could get her to take the extra dose of Klinopin and have been successful a number of times. I can tell when she doesn't take it at all and can almost predict when she will sleep walk. She never resists when I undress her so far although one time she did swing her arm at me. When she has panties on I just pull them down and let her walk out of them the pajama bottoms are more difficult to get off her. I never touch her as she walks around and always wait until she gets back to bed. She only weighs about 120 pounds and it makes it easy for me to move her around or spread her legs apart. When she lays on her side I finger her from the rear and think maybe I could have intercouse with her that way. I bought condoms but so far haven't tried it. She has a boyfriend and they do go out often and I am sure they have sex. Her boyfriend is a really nice guy and I'm sure he would kill me, as Jerry would, if they ever found out what I am doing. I get home from work before her and cook dinner for her sometimes. She treats me like a kid and thinks of me that way I'm sure. I never let her know I see her sleep walk and always treat her nice. I help her clean the house and aside from paying rent always buy extra food. I painted the living room and dining room for her and make minor repairs when possible. She seems to like me very much but only because she doesn't know what I am doing to her. I do feel guilty at times but as soon as I get to see her naked again it fades quickly. She has seen me in my underware a few times but only once has she seen me naked and it was purely accidental. It excited me but I apoligized and told her I was embarrased by it. Little does she know how many times I've been naked in her presance. Thankfully she doesn't know how many times her hand held my penis or how many time my penis touched her lips. I've taken full advantage of her so many times and have licked or kissed most of her body. Jerry is coming home for thirty days next month so I got her to promise me she would take the Klonopin every night. He used to make her take it more often and as far as I know never got her to take an extra dose. I don't want him to find out how I've learned to manipulate her since he's been gone. When she is fully awake I never act the least bit interested in her sexually. She doesn't realize how attractive she is and only dresses nice when she goes out, to work or has her boyfriend over. She rarely wears make up and honestly doesn't need it. Even her breasts are perfect and although not so big are perfectly shaped with dark nipples. I have taken quite a few pictures of her naked and have them well hidden. I envy her boyfriend at times and am jealous that he has consentual sex with her. As much as she treats and talks to me like I'm a child sometimes, I make up for it at night. I maturbate everyday thinking about her and mostly when looking at her naked pictures. I do often thank her for letting me move in, for more reasons than one.