Jack my nineteen year old step son now knows I'm leaving my used panties for him to enjoy. It's because last month I definitely caught him masturbating in his room using a pair I'd not long taken off. His hard long cock looked wonderful as he stroked it, holding my panties to his face. I just allowed him to use them as I myself became turned on. It was such a beautiful sight watching his pulsing cock being pleasured, I very nearly took over from him. It was only his father calling from downstairs that had me ducking behind the half open door. The same night I had Jack's father fuck me as I imagined it was Jacks young cock deep inside me.
The next few days at every opportunity, I left my used panties on top of the wash basket. Twice they were taken and twice I found them with Jacks cum smothering them. I became obsessed with rubbing my pussy, getting myself all wet and then wiping my juiced up folds with my panties. Only instead of leaving them in the wash basket, I'd accidentally on purpose drop them near to his bedroom door. Jack used every pair and each time left his gooey mess all over them.
Five days ago, just as I was about to drop another well used pair, Jack stepped out of his room and caught me. His smile was massive but not as big as the bulge rising in his shorts. He bent down, picked them up and straight away put them to his face, sniffing the crotch area. I became horny and wet instantly, but once again it was Jacks father who ended anything that might have developed, calling me to help him with his tie.
In a little over a weeks time, Jack and I will be on our own. My husband will be leaving us to work away for a few days. Jack's already hinted to me that he'd like to directly taste my pussy, by putting a note into my purse. It read "Thanks for the panties, you taste amazing, how about the real thing ?".
Now all I have to decide is, if I'm going to cheat on my husband with my step son. I even used a pair of Jacks underwear the other day to masturbate to, when they were both out watching their favorite team. When I came I cleaned myself up using them and then left them on his pillow.
Jack's response was to leave me another note. It was simple and to the point "Wait until my dad leaves next week".