GS-277 - Left alone with my sister-in-law, she’s going braless and begging for it.

Alone at home with my sister-in-law, she’s completely reckless—flashing her panties and showing off her perky, braless nipples. I tried to change the mood by turning on the TV, but an adult film started playing, creating an incredibly awkward tension. When I finally touched her, she couldn't hold back. Now, we're engaging in a forbidden affair behind my wife's back.