My little sister, who is super into me and innocently approaches me, turns out to be my exact type! One day, while I was in the bath, she said she'd come in to wash my back. Her budding chest was fully visible, and our skin rubbed against each other… I couldn't hold back and got an erection, of course she noticed, and I thought 'shit,' but then she said, 'If it makes big brother happy, I'll do anything.' Plus, she said, 'My nipples feel amazing,' so when I played with them, she arched her back and had continuous orgasms!
