This is a story of fantasy. I am sure the feelings and actions I am about to describe do happen in real life, just not to me, I would never have the nerve to act on my feelings. I hope you all enjoy this story I have fantasized about it several times.
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I met my now wife when she was 34 and I was 31. We met online and hit to off almost immediately, resulting in our being married 6 months later. She was twice divorced and I had never been married. She had two girls, ages 12 and 11 at the time, Beth, the 12 year old and her sister, Julie. They both still had strong ties to their father and would go to stay with him every other weekend. For the first several years of our marriage everything went very well, with the girls gone every other weekend my new wife and I really got to enjoy each other sexually. The stories I could tell about our sexual play. Everything changed about 4 years into our marriage, the sex almost stopped and my wife decided to take a job to earn some extra money. The job she took required her to work some weekends and every once in a while she would be working when the girls were home.
It was easy for the girls and I to form a tight bond, by that time they were going to their dad's less often and they had noticed that I was the one paying for all of their needs. I had won some money and had a swimming pool installed, and when Beth turned 16 I was more then happy to buy her a car. The upside of the swimming pool, besides sparking some hot scenes with my wife, was the fact that I got to see the two girls grow into womanhood. My wife was blessed with a very nice set of tits and I hoped that the girls would take after her. My wife was never shy about her body and would get up in the morning and begin breakfast wearing only her sports bra and the shorts she slept in, the girls followed her lead and at first it was no big issue, but once they began to mature it became a different story. I was amazed at how their tits seemed to grow larger almost weekly, every week Beth's bust seemed bigger to me and her sister, maturing slower, also began to swell. Once when I was doing laundry and couldn't help but notice the size in their bras, they were both wearing C cups.
The girls couldn't be separated from the pool during the hot summer time. They would always be out there, either sunning or swimming. They always invited friends over to enjoy the pool and more then once I went into my room to watch them swimming with their friends. I tried to tell myself that I wasn't checking them out; they were 18 and 17 at the time, but that I was looking over their older friends.
The summer following Beth's graduation was the best. She was out of school and her sister was getting ready for her final year. They seemed to live in the pool that summer and I began to watch from the bedroom more and more often. I finally had to admit to myself that I was watching them, not checking out their friends. Who could blame me, every year their swimsuits seemed to shrink and their breasts grew bigger, sexual relations with my wife were at an all time low and I was horny with two very attractive young ladies sharing my home.
That's when it all began to change; I began to search the web for any stories about incest. I knew that what I had in mind wasn't really incest, seeing how the girls weren't mine, but having lived with them over the past 6 years I felt like a dad to them. I wasn't getting any sexual satisfaction from my wife so I began to masturbate more and more while looking at pictures of 'parents and their children' on the internet. I even found several sites like this one that had stories posted dealing with incest. I also found myself doing the laundry more and more just to be around Beth's things, and would even smell her panties from time to time to gain arousal.
It was mid July when Beth found some of the sites I had visited on the computer. I thought I did a pretty good job covering my tracks but one site sent an e-mail to me and Beth found it before I did. She kept the e-mail a secret for several weeks until one day when she and Julie were planning on a swim. I heard them changing into their swimsuits and moved to my room to watch them, pulling my cock out to enjoy the view. Julie was first outside and dove right in, Beth didn't get out there right away and I began to wonder why, when the door to my room opened slowly and I turned to look and saw her standing in the doorway.
"I thought I saw you watching us from in here before," she said, "but when I found this e-mail I knew you were watching us."
She then handed me the e-mail she had printed and deleted from the computer.
I didn't know what to do and turned away, tucking my wilting cock back into my jeans.
"At first it wasn't about you," I pleaded, "I did watch at first to catch a look of your older friends, you don't know but your mother and I haven't been real active lately. If you know what I mean."
"Well I kinda thought so, Mom had been really busy with work and doesn't seem to have as much time to spend with you. Do watching Julie and I really get you bothered?"
"At first, no, it didn't bother me," I said, "but watching you both grow into beautiful women I have started to pay more attention you both."
"Well I guess that our suits don't really hide much do they?" Beth said smiling, pulling at her bikini top.
"They leave very little to the imagination." I laughed.
"Do you, um, play with it while you watch us?" she said pointing at my crotch.
"Sometimes." I told her, 'not always but sometimes, when I really need a release."
"Ok then, I was wondering, walking in on you with your cock out and everything. I am kinda flattered I guess, that you find me that sexy that you play with your cock." Beth said smiling again.
My cock began to rise again just from hearing Beth say the word "cock".
"I can assume then, that today you needed a release huh?" she said smiling more.
"You could say that." I replied, relaxing slightly.
