I let out an almighty groan of pleasure as I pulled my c**k from Jen's now well-used p***y and gave myself a half a dozen strokes. I kept my hand on Jen's head to make sure she didn't look up and spot Erica, but other than that, my attention was on her sister completely. Our eyes locked as I started shooting my c*m all over Jen's ass and back. Erica shuddered and squeezed her thighs closed around her hand in what I suspected was a silent orgasm.
By the time I was done, Jen's firm, round butt was covered in my seed, and a few big strands of my c*m had shot up her back. The sight was highly arousing as she lay there panting heavily, but I only wished it was Erica instead. No... if it was her, I would have filled her up without a second thought.
The look on Erica's face was one of pure lust
