A Self-Control Hell

Happily married for 18 years, great balls-out sex life with wife, everything is cool. Only one problem........

My wife's sister!

She's about 10 years younger than my wife, and although my wife is shapley and well-built, so is her sister. But the problem is that her sister tends to gain and lose weight with alarming frequency.

The other problem is that we've been flirting for years. Innocent enough I thought. Just lewd comments here and there for a laugh, although I have to admit it aroused me from time to time (and I never thought about what she thought - she's a hard read).

Jumping to the present, we've began an affair, maybe the strangest one you could imagine. We don't fuck! Oh yes, we certainly want to fuck, and have come close. But the situation turned out tha.t neither she nor her I wanted to have a full-blown "affair," but at the same time wanted to fool around. In other words, we wanted to have some fun, but remain faithful to our spouses.

It's been one hell of a challenge!

So what do we do? Three or four times a year on the average we get together, strip down, and do everything there is to do that two people can do, except fucking. Mostly it's masturbation of ourselves for each other to watch and each other. We most certainly do the oral sex thing a lot and have had some intense 69's. She's allowed me to inject a finger up her asshole occasionally and that may be the most trying time of all - my finger up her ass makes me want to slide my rod into her so bad! 

Don't get me wrong - it's a lot of fun. We have a real blast. But what keeps us from fucking, we agree, is knowing that we'll orgasim at least once, and it's our choice. For her, her favorite is to have one of my fingers in her warm moist cunt, two of hers in there also, and occasionally one of my fingers up her ass. I seen her cum three times in a row, fast and hard, doing this. My favorite is when she sucks my cock until I'm ready to blow, then grabs my wet rod, squeezes and jerks me off and lets me cum all over her tits. One time she tit-fucked me to an orgasim, which was fun. But her jerking-off skills are amazing, so I always go for that.

Anyway, that's the way it goes in this affair. And so far, so good.