True story... I don't know what to do about it, but I have to share. The names have been changed to protect the innocent and the guilty.
*
My wife Teresa and I have been married for 21 years. We're in a good place in life -- good jobs, two wonderful children, and a reasonably active sex life. At 44 years old, we're both in good shape; Teresa has nearly-black medium-length hair, brown eyes, and the most sensuous lips a woman can have; a little exercise has kept her slim body in good tone, and her medium-sized boobs are still firm.
We have in-laws that live fairly close by -- my wife's sister and brother-in-law (Annie and Mike) live about two hours away, and our children are very fond of them. As a result, we visit quite often. This is about one of those visits.
We'd been at Annie and Mike's for about a day and a half. We'd eaten out the night before and gone shopping for the kids that morning. Back at the house, the kids had headed for a playground down the street, and the adults were relaxing in front of the TV with some unmemorable movie on DVD. It was mid-February, and the house had a bit of a chill. My wife and Mike were on the couch with a blanket across the two of them, sharing it with my in-laws' three lap dogs. I was on a big, cushy leather chair in a sweatshirt, while Annie was in the chair next to me, a small blanket across her legs. Annie almost always wears tight shirts without a bra while at home, showing off a set of spectacular boobs of which she is rightly proud -- that they're largely the work of her plastic surgeon really doesn't matter. Both Mike and Annie are in excellent shape, and I've had many fantasies about what Annie and I might do together. As often happens, I spent as much time glancing at her boobs as I spent watching TV -- the chill was doing a wonderful job of keeping her nipples perky. The sun was shining through a huge den window, and we were all pretty relaxed.
About a half-hour into the movie, I started noticing something odd on the couch. Normally, the dogs move around a lot -- it's an occasional distraction that I usually ignore, but this time I noticed some movement under the blanket that had nothing to do with sleeping poodles. Both of Mike's hands were under the blanket, and one looked like it might be on Teresa's leg. While this got my attention up, I tried to act like I was still watching TV. The fact was, nobody was paying me any attention: Annie was starting to doze in her chair, and Teresa and Mike were seemingly intent on the movie.
As I watched, I realized his hand wasn't just on her leg, but slowly rubbing the inside of her thigh, very near her crotch. Despite my rising anxiety, I was also very excited. I've had my share of fantasies of one (or both) of us fucking someone else, and my cock was starting to react to what I was watching. I knew there couldn't be much going on -- Teresa was wearing long sweatpants, and there was just no way for his hand to get to anything interesting without being very obvious.
After about ten or fifteen minutes of this (honestly, it's hard to tell), Teresa slipped her right hand under the blanket and slowly moved it over to Mike's leg. This got me more worried, as Mike was wearing very baggy shorts, with easy access to his cock. All sorts of thought were running through my mind, and a feeling of nausea was competing with my (now rock-hard) cock. While it was hard to be certain about what was happening, Teresa's hand started about halfway down his thigh and moved up to his crotch, and I was pretty sure she'd pushed the shorts up and out of the way to do it. Mike's other hand, which I'd ignored until now, moved away from his crotch to make room for hers. For a while they didn't move, but the look on Mike's face told me that she had a hold on his dick... and he was enjoying it.
After a couple of minutes, she started a very slow up-and-down motion on his dick, and this went on for several minutes. The movement was slight -- had I not noticed from the beginning, I probably would have thought nothing of it. Mike's eyes got a little unfocussed, and there was a slight red flush around his neck. Teresa kept her eyes glued on the TV; looking back, I suspect she didn't want to move around enough to attract attention.
At this point, Annie gave out a snore loud enough to wake herself up. Mike started up with a deer-in-headlights look, though Teresa stayed calm and looked slowly toward her sister. Teresa's hand stopped moving, but didn't pull away from Mike's cock. Annie laughed, and said she better go upstairs for a nap, while I tried desperately to look nonchalant and interested in the movie (which had become far less memorable than even before).
Inside, I was going crazy. My wife was jacking off another guy, her own brother-in-law... and right in front of me! I was way too freaked out to do or say anything sensible, but I was also incredibly excited. Somehow I had the presence of mind to realize that little more would happen with me there. Mumbling something about being tired and taking a nap myself, I got up carefully (turning so they couldn't see the hard-on under my sweats). A voice screamed in my head about what I might be letting happen, but another voice wanted something to happen.
I headed for the guest rooms at the end of the house, and closed the hall door behind me -- most of the way. I left it cracked open just a bit, and peered through the narrow opening to see what would happen. I had a clear view of the couch, and anything they tried.
