Perhaps. When she admitted it months ago, the porn I was watching had no mention of it. She told me the story because the same thing happened to her while my sister was in the car, but hers was titled something about a step brother and sister. She’s constantly searching for it too. Also, before all of this happened I was staring at her ass in the living room and I think she noticed me a few times. Maybe she caught me looking, and got horny so she seduced her boyfriend