Girlfriends 18 year old sister

Slowly she began to fondle my cock with her hands as the vibrator buzzed inside her. She then pulled me onto the bed and slowly positioned her mouth in front of my bulging cock. Her lips parted and her tongue moved up and down the sides and top of my dick. She then inserted my entire dick in her mouth and started to move wildly.
The vibrator was still buzzing and she was feeling the pleasure as she moved faster. I could feel her warm wet mouth take my entire dick as I began to cum. She didn’t even flinch when I came into her mouth. She sucked harder and swallowed every ounce with erotic pleasure. Jaime then experienced a great orgasm from the vibrator and the excitement of sucking me off.
She moaned loud and clinched her hands on my ass. Jaime removed the vibrator and pulled me towards her. She then got on her hands and knees and begged me to fuck her from behind. I paused a moment, knowing that this was my girlfriends sister. But my dick throbbed at the sight of her ass awaiting my entry.