It had been three months since we started dating, and we were celebrating our anniversary. Her parents had gone back to their hometown, so she invited me over to her place. I was nervous since it was my first time visiting her home. Suddenly, her younger sister came back and said she'd heard all about me from her older sister. She complimented me, saying I was cute, and I shyly fidgeted, being inexperienced with girls. While my girlfriend gently stroked my sensitive nipples, her younger sister quietly seduced me without her noticing. Her warm, sweet touches made my heart race.