I slowed down, fucking her with long, deep thrusts instead. Pacing myself. Her moans were building again, getting closer to another orgasm. If possible I wanted us to come together. It was difficult to hold back, however, and I soon felt myself losing control.

"Should I, uh, pull out?" I asked, panting.

"Aah, no, don't!" she exclaimed, bending her legs around me.

She moaned louder, pushing back against me as best she could. The walls of her pussy clamped down hard on me, milking my cock as I was brought over the edge.

I came, grunting and shooting streams of hot cum into her. Covering my younger sister's insides in...