Slippery

I watched as he reached up under her dress and began to rub her already glistening pussy....I heard her small gasp as he slipped his finger inside her and begin slowly stroking in and out of her wet slippery sex.....it was like I was hypnotized as I watched this man handle my wife in the most intimate way and when I finally looked up I saw that they were both watching me....and they were both smiling....it was only then that I realized I had been rubbing the silky crotch of my panties all the while!!!!
I blushed but I didn't stop....neither did they....