"Happy Birthday, Virgin!" I Fucked Both of My Step-Nieces!

I've been fucking my stepuncle for a while now, and everything was going great. My body craves his dick all the time, and he knows how to give me an orgasm better than anybody. I want him to fuck me forever, but he was getting bored with me. The other day I was riding his cock, fully naked, and about to cum, when he told me he was not feeling it. There was no way I was going to lose him, so when he asked me about my 18-year-old virgin stepsister, I agreed to invite her over to his place to celebrate her birthday. She was a woman now. I would have done anything to make him happy, including hiding my stepsister's bikini so she would have to swim in her underwear in front of him. When she woke up in the middle of the night and found him jerking off in front of us, I calmed her down, explaining that everything was okay. I knew she was going to love having a cock inside her, so I was not worried. When she let loose and let him fuck her, she proved me right. Her moans were as loud as mine, and she even licked my pussy as my stepuncle was pounding her. Turns out sharing a cock is not as bad as it sounds. She even licked his cum off my belly. Thank goodness for virgins and threesomes.