Note: This story was dynamically reformatted for online reading convenience. Part Two "Larry & Lisa" I sell insurance and do a lot of work from home. So we had the office built on with it's own entrance and bath about seven years ago. A few years after Linda and her two kids (Lisa and Larry) moved in. Both of them are hers from a pervious relationship. Larry was six and Lisa was three when I met Linda and for the first few years after we got together they just shared one room and I used the other bedroom for my office. That is until one day when I walked in on them playing "Doctor" that is. Larry (Eleven at the time) was standing there with his pants off with his little hard on sticking straight out and had his little sister laid out flat on the bed naked with her legs spread wide open while he was gently exploring her hairless young pussy. They both turned beat red when they saw me standing at the door. I remember Lisa almost jumped out of her skin as she came off the bed and ran over to me. They both began begging me not to tell their mom what I caught them doing and how sorry they were. It was almost comical watching them as they both stood there naked as the day they were born and caught red handed. I thought it over as I was standing there watching as tears poured from Lisa eyes dripping down on to her flat little chest and rolling down her belly. Larry stood there with fright in his eye as his hard on disappeared. I wasn't mad just surprised at the sight. I told them to get dress as I explained to them while it's natural to be curious it was wrong because they were both still too young and brother and sister. Needless to say they needed their own room after that. I never did tell Linda what I found the kids doing that day. I didn't see the need. This gained the kids trust of me and brought us much closer for quite some time. I just played it off to Linda, as they are getting older you know and they both really needed there own room. Both kids have dirty blonde almost light brown hair with hazel eyes. For the most part they were good kids while growing up; that is until their real dad came back in to their lives. Shortly after Larry started hanging out with his dad his grade dropped and he started getting in trouble in school. I'm also pretty sure that's when he started using drugs. Larry moved out to live with his dad almost two years ago after I caught him fucking his 14-year girl friend doggy style in my bed. Now if the fact that they were having sex in my bed wasn't bad enough he didn't even stop when I walked in. In fact he started fucking her harder saying "Look Debbie we've got our self an audience" I was stunned by what I was seeing and I couldn't move as I watched my stepson fuck his girl friend in front of me. There she was on her hands and knees moaning as my son kept slamming his cock in and out that young sweet pussy, neither of them paying any attention to me. "You two better stop right now!" I demanded. Larry just looked over at me as he slammed his cock into her even harder as he ask "Debbie do you want me to stop?" She looked back at him as if I wasn't even there "No please don't stop! Please Don't!" I was pissed and going to physically stop them but I wasn't sure how that would go over a thirty year old man touching a naked 14-year girl no matter what the reason. I consider calling the police but I wasn't sure what to say or what would become of it either. So I just walked out of the room and decide I would handle it after I calmed down a little. About 15 or 20 minutes later Larry came out wearing his just his boxer's shorts with cum stains on the front them and a smile on his face. I could see his eyes were all glossy as he looked at me like it was no big thing. I asked him, "What do you think your doing!" "Getting a sweet piece of ass. If you want some she's still in there and she'll do any thing you want" was his answer. I never hit him before that day but his smart-ass attitude put me over the edge and I backslapped him across the face. He had a total look of disbelief as he brought his hand up to face. It was as though he was some place else. He starting crying and then yelling; I didn't know what to do so I simply told him to go to his room and went to check on the girl. There she was laying flat on her back her long brown hair was all a mess her eyes closed with a slight little smile on her lips. I couldn't help but to look down at her naked body lying there with her little breast and pussy just exposed for the whole world to see. I remember getting a hard on as I look down at the small frame of her body. Her pussy still wasn't fully formed and her lips were barley puffed out even after the abuse it had just gone through. All she had was a small sparse V shaped mound of fine hair covering it. She was beyond doubt a very attractive young girl and I couldn't help but admired her young body. As I gazed in disbelief I notice patches of drying cum on her neck, breast and stomach. Just how many times did Larry fuck her was all that came to mind. I knew I couldn't leave her like that so I moved her body a little as I pull the comforter out from under her to cover her up. She moved a little at my touch bringing her hand down and started to rub that beautiful pussy of hers while moaning softly. I remember thinking how bad it would look if some one were to walk in, but I couldn't help my self as I took one long last look at her tender young body before I cover her up. I then went to check on Larry but he was nowhere to be found. I contemplated about just what I should do for a while but I was lost for the answer (I'll admit not all of my thoughts were so pure with that sweet little piece of ass just lying in there past out to the world). About two hours later when Linda got home from work I told her what I walked in on and what had happen. At first she didn't believe me until I told her to look in the bedroom and sure enough still past out in the bed was the naked teenage child covered in dry cum. I had Linda wake her up and get her dressed. The young girl didn't want to tell us any thing including her name and I wasn't about to push her for any answer or force her to stay any longer than she already had. So Linda helped her to clean up and get her dressed in what clothes of her we could find (her bra and panties were no where to be found) and sent her on her way. I didn't tell Linda exactly what I had seen but I did confide in her that it had made me as horney as hell and I needed some relief. Although she protested a bit at first I lead her in to the bedroom and had her remove her clothes and get on the bed in the same way as the young teen was earlier that day. I crawled up behind her putting my self in the same spot Larry had been as I started fucking her doggy style. I remember her calling me a dirty old man as my cock moved in and out of her pussy, she was right I was reliving the show I had witnessed earlier and imaging her to be the young teen and enjoying it. I know she was enjoying her self as well as she was driving her ass back to meet my cock as she continue to call me a dirty old man and say things like "Your fucking me but your thinking of that little slut Larry had in here earlier" "I bet you wish you could of had some of that don't you!" She persisted as I continued to plunge my cock in and out of her pussy. I could feel the walls of her pussy as they tighten around my cock as she started cumming. I loved it as slammed my cock in to her as I dumped my load in her pussy pushing her face first down in the bed. She was absolutely right though I was thinking of Larry's girl friend and wishing I were young enough to have gotten some of that pussy of hers. There Linda was laying face first on the bed her stomach on the wet spot left from Debbie. The aroma of sex was thick in the air and I knew she had to have notice, as she was breathy heavily in to the sheets the source of the musky scent. I smiled as a drop of cum dripped from my cock on to the cheek of her bare ass. I was looking at her but was picturing the young girl from earlier as she scooted up and rolled over on to her back placing her ass just above the wet spot. "Why don't you go wash up?" she said as she brought her hand down to her pussy almost in the same manner Debbie had earlier. As I was coming back from washing off my dick I was euphoric in the sight of Linda still in the same spot playing with her self while waiting to suck my cock hard again. (As I mention back then she never swallowed and refused to suck my dick after we fucked unless I washed it off first so I knew what she had in mind.) I could feel my cock start to come to life again as she smile when I put my semi soft cock to her lips. She reached out cupping my balls as she opened her mouth to accept my cock. She only suck on it log enough to get it hard again before laying back on the bed "Fuck me!" is all she said as she spread open legs. I crawled up on to the bed between her legs I could feel the cool moisture from the sheets on my balls as my cock entered her hot pussy. She started cumming almost instantaneously as my cock penetrated her pussy. I could feel the walls of her pussy tightening around my cock as she was howling out with pleasure. I fucked her hard that day, harder than I had in a while. She was on fire grinding her hips in motion with my cock while playing with her clit. The juices flowing from her pussy just added to the wet spot on the bed. I was kissing on her neck and caressing her breast while our bodies moved in unison. I could feel my ball as they started to tighten as I my load started to build. I pulled my cock free from her just as I started to cum, the first shot made it to her breast the second fell short landing on her stomach and the last bit dropped on her pussy. She looked up at me as if to say something but stopped as I rubbed my cum in to her chest. I remember wishing it had been Debbie as I went to clean up. That night when we were in bed Linda started asking me questions about what I had seen, what they were doing how I felt, what it looked like! She persisted with the questions as she began to play with my cock bringing it back to life again. She asked me to fuck her the same way Larry had fucked his little girl friend earlier. Not being one to miss an opportunity I told her Larry was fucking her in the ass and did she want the same thing. To my surprise she was all for it. "Yes please fuck my ass" was all she said! (Back then this was something else she never did) Although she had change the sheets the smell of sex was still heavy in the air as I fucked her in the ass that night. I remember thinking how good it felt cumming in her ass as she begged to be fucked even harder still. The only sexual disappointment from that day was missing my opportunity and not fucking Debbie. The next day when Larry finally did come back home he was even higher than when he left and looking for a fight. That was pretty much the last straw he moved out that day to live with his father for good, but not before informing us that he and a couple of his friends had pulled a train on his girl friend the day before and that they had done it in the house before. Lisa moved out a little over 6 month ago just after her 15th birthday to live with her dad as well. He kept telling her she was too old to be told what to do and she should be treated like an adult and not a child. She still comes over a lot to see her mom and for the most part she still is a really good kid although she has started to change a quite a bit lately. She been dressing a little skimpier lately and seems to be more aggressive when talking about sex. We hadn't change anything in her room and I can't help but to believe that she may decide to come back home some day. Although she tries to play everything off now that she doesn't have any rules at her dads house or even a curfew on how late she can stay out. I simply tell her that I still think she's to young to be running the street all night and she tells me she doesn't have to listen to me because she doesn't live in my house any more and I'm not her father.