I Unknowingly shot my cum into my sister in-law's panties..and I love it.

I recently had an experience that I can't get out of my head. I'm a 40-year-old woman, and I di that I get turned on by the idea of my sister in-law wearing my worn panties. It all started when I accidentally ejaculated into a pair of her black Lululemon panties, thinking they were my wife's. My sister in-law often comes over to use our laundry machine, and my wife handed her those very panties. I couldn't help but feel a rush of excitement knowing that my sister in-law was wearing my cum-stained underwear. The thought of her wet cunt and the idea of smelling and tasting her, all while thinking it was my wife, has made my balls feel so full and heavy. Now, I can't stop thinking about how I need to fuck my sister in-law.