I have a friend. She is married. I am married. We stay at her house every once in a while to watch her kids. She is a few years older than us, and we don't have any kids, so we are happy to stay with them.
A few days ago, we stayed with them, and I was left alone during the day while my wife went to get her nails done. I decided to see if I could find anything that hinted of my friend's wife's sexuality. There has always been a sort of unspoken sexual tension between her and I, and so I decided to see how she is when the lights get turned down.
I began snooping around, and I quickly found her panties drawer. I opened it and reached to the back, and instantly found many pairs of lingerie, thongs, and various skimpy undergarments. I found one that I liked to imagine her in, and I stepped to the bed. I sat down, pulled out my cock, and started rubbing her panties on my cock. After a few minutes of jerking off, I rubbed my pre-cum in the part of her panties that touched her pussy. So now, when she wears those panties, she'll be touching my pre-cum.
I went to the bathroom and cummed, but not in her panties, thinking that would probably get her mad at me. Hopefully one day I'll get to see her in those panties, and I'll get to cum in her pussy, rather than in her panties. If she reads this, hopefully she gets turned on and things get started up.