I’m not the best storyteller, but this happened to me over the past year. First a bit about me. I am in my early 40s married with a regular build. My wife and I go over her sister’s regularly to visit and sometimes use their pool. Occasionally my sister in law (call her Beth) also asks me to come over and do some house repairs. Beth is in her mid 40s great looking with long blond straight hair, skinny, with B cups chest. She has 4 children all out of the house and older so she has a mature but very sexy look. My wife tells me Beth gets hit on all the time, but she not one to flirt to a stranger. She has always hinted to my wife how lucky she is to have me and how handy I am. Well it’s just because her husband is a lazy good for nothing idiot. When I am over helping with some house repairs most times my wife is not with me, Beth will sometimes make small flirtations to me. It started with one time I went over to do some work it was a hot day and she would come out with her new bikini on and ask me what I thought of it. She did that with 2 different suits I swear just to get me going. Usually after I am done with the work she will always give me a big kiss on the lips, not your usual peck on the cheek when the wife is around. There was one time we were over for a birthday party and after a few drinks we were all having laughs. After a while I went to the couch watching the ball game on TV and the girls were at the kitchen table behind me talking. Her husband was not home as usual was he was working. My wife gets up to go to the bathroom and Beth comes over behind me asks how I was doing she is rubbing my shoulders and when my wife is out of the room, Beth leans over the top of me puts her tits on top of my head, and asks me again. I told her looking at her upside down over me and I said, “I am doing much better now”. She laughed and said, “I’m sure you are” and winked to me. Well that kind of stuff went on for another six months. So now I am starting to get into her playfulness. I get another call from Beth to come over and help her with some new curtains she bought, so I went over and wow to my surprise her husband was there. When I got there both of them were at the pool area drinking she has a bikini on and she seemed aggravated. I asked her what was going on, and she said he wouldn’t help her put them up. I noticed that she was feeling pretty good as to I think the margaritas were really flowing. So we go into the house and her lazy husband stays out by the pool, I told her I need to move some furniture around to get to the window areas. She is helping move some things and oops her bikini top came loose and showing her great tits. She laughed and said “well there is a free show for you”. So I told her “well if that’s free, wait until you get my bill for this job”. She just laughed and tied her bikini back up. With seeing here tits, my mind was now racing and I was sporting a great hard on. There was a situation where she was moving a small table and she backed up and backed me into a corner up against the wall. Well, Beth’s ass crack went right onto my blue steel hard on. She stopped and said “is that what I think it is”? I said “well, what did you expect from that free show you gave me earlier? With me trapped in the corner she reached around behind her and grabbed it over my shorts and started to rub it. I told her that feels good and I pull her close into me and start grinding her ass with my cock. My hands are now making their way up her belly to her tits, I lift her top and softly play with her nipples. She is moaning and grinding her ass into me. She tells me to come with her, so we so over to the couch which has been moved under the main window. She sits on the couch and I am standing in front or her looking out the window. She is rubbing my cock and pulls my shorts down, my meat flops out to her hand and she is stroking it. She says to me “let me know if he is coming in.” Oh My God! I am looking out the window at her husband reading while she is giving me one of the best blowjobs I have ever had. I reach down and untie her bikini top and let her tits out to play. I am really getting into it now, I need to have her so after a few minutes I tell her to get up, turn around and kneel on the couch. She is now kneeling with her arms on the back and now she is looking out the window at her husband and I am pulling her bottoms off. I’m kneeling on the floor and I am going for her beautiful shaven pussy. I lick her ever so gently, work my way around her pussy and then in and out with my tongue. It is so soft and very wet, she is letting out some little moans, but I know nobody can hear, the windows are closed and the AC is on. I find her little clit and she is now pushing into my mouth and riding my tongue. I stand up and guide my throbbing dick into her soaking pussy. I grab her little ass that she is pointing up to me. Her little asshole is just staring at me as I spread her cheeks wide. We are working each other with a great rhythm. I don’t want this to stop, I am trying to think of anything to get my mind off of cumming. It doesn’t help I let her know I am close and she “says it’s ok, do it in me”. I with a few more thrusts I am shooing a fountain into her. Her legs are curled around me holding me into her. When I finish, I try to pull out and she says “no not yet” she waits until I get soft and she releases me from her leg grips. I pull her up and hold her tight and say to her “well that was a surprise” and she told me that that’s just what to doctor ordered. As she went into the bathroom to clean up, I cleaned up sat for a second and continued with the curtain. Funny enough, it was about 10 minutes later I was pretty much done and she came out changed into shorts and t-shirt. The job was complete and we moved the furniture back. We probable spent more time fooling around than the project took. She asked me if that was payment enough for the job? I chuckled and said I would think so. She thanked me and said, “Let’s go out and have a drink with my husband.” If you like this story I have a couple more.