When Vickie stepped back out onto the back patio, she found Kevin and Dawn f*****g in a simple missionary position on Dawn's chase lounge. Her legs were wrapped over his, and his d**k was deep inside her p***y, but they were lying more or less still, as he tenderly kissed her, and she ran her hands over his bare back. It struck Vickie as a very loving moment, as opposed to horny teenage s*x. She smiled, and said, "You guys really do seem to love each other; you're not just convenient and kinky f**k-siblings." Dawn looked up at her, and replied, "We do love each other! We've been talking about moving somewhere and getting married since we're not blood sister and brother. Or we could just live like we are married, since we already have the same last name." "Wow!" Vickie said, genuinely su

