I read poetry. Listened to music. A tortured soul.*My one link to normality was that I knew Riley.We had grown up together, our families went on holid...y together. TheParkers and the Robsons were inseparable. "I wonder if they wife swap"Riley would often tease, both of us grossed out and laughinghysterically. We would spend whole Sundays at each other's houses. Rileyand I were actually pretty close, and she seemed to genuinely like me.But not at school, she knew my association was social. "And while you don't need to use this company, you very much want our consent and cooperation to be your case study."I tried to read her. Moments before I'd been sure she was going to turn me down but now she was going over the whole thing so deliberately. Did she enjoy drawing out a refusal? I couldn't tell what she was up to. "Yes," I said, immediately chagrinned that my word was little more than a mumble."You don't need us." I stared. I didn't understand why she repeated the point. "But you. Inside the changing station there were mirrors, and i couldn’t resist flipping up my cups for a reassuring look at my own breasts, partly out of girlish jealousy and also because i was undeniably eager to see them and touch them having been aroused by the bikini girl. My nipples began to harden in the damp coolness and stood out from their white globes in pink defiance. My long blonde hair fell down around them, obscuring them, and i shook it back over my shoulders, smoothing it, my eyes. ” She then removed her panties. She saw him look at her pussy and then look away. “Oh come on Nate you knew this was gonna happen eventually. Besides I saw your cock it’s only fair you see my pussy.”“But..but you’re my sister.”“Yes, the same sister who just kissed and fondled and gave you a blowjob.” Smiling she climbed up on to the bed and then onto his chest. “Now, it’s your turn to do something for me.”“Wha…what do you want me to do?”Smiling as she looked down at him, “Oh you will know what.