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Her younger sister, Karen, who is fond of me. At first I thought it was annoying, but... My feelings changed when I started to suspect that the person she was traveling with was a man. My uneasy feelings for her...I distracted myself with your sister... If you're going to cheat on me, I'll cheat first... That's how I felt, but... The act towards Karen, who accepts anything, escalated. Infidelity, betrayal, sex alone is not enough, blindfolds, handcuffs, training and...