I kept talking to her in a low voice, urging her to come. She finally grimaced and shivered as orgasm overtook her. I watched as she went through the ecstasy of it, making cute little sounds through clenched teeth.

"You're very pretty when you're coming, Sis," I told her after it had passed and she lay exhausted in front of me.

Despite everything, she blushed.

"T-Thanks," she whispered.

I kissed her lightly on the lips and smiled at her.

"What about me?" Melissa asked, sounding eager to be noticed. "Now that you guys have fucked each other on top of me, isn't it time for me to get some attention?"...