My petite stepdaughter had always been a bit of a kinkster, ever since she caught me watching her and her boyfriend fuck in the living room one day. Now, I didn't mind that they were getting it on - after all, she was my stepson's girlfriend and I loved them both like family - but what really turned me on was when she would sneak into my bedroom while he was out and rub her little pink pussy against mine, as if to say "I know what you're watching, dad, and I want some too."
One night, after a particularly intense session of spying on them, I decided it was time to take things to the next level. I crept into her room while she was sleeping, and gently woke her up by tracing my fingers along her soft cheeks. "Hey, sweetheart," I whispered in her ear, "I know what you like."
She opened her eyes slowly, a mischievous grin spreading across her face. "You do?" she asked, her voice barely audible above the sound of our breaths.
"Yes, I do," I replied, leaning in to kiss her softly on the lips. She tasted like strawberries and sin, and I knew right then that this was the beginning of something new. Something forbidden. Something dirty.