I proceeded cautiously, saying, "This conversation is about your sex-life, Donna. It's partly about how much sex you've had in the past, but it's most...y about how much you'll be having for the next few years. You've still got three and a quarter years until you're eighteen, so your behaving calmly and maturely is important for a lot longer yet." My explanation wasn't proving to be nearly as much fun as Donna had thought it might be. -- "I know there are a few girls your age who're having sex,". It felt like warm velvet, so good, in fact, that I almost didn’t notice when her fingers left my cunt, leaving a wet trail of my juices over my tummy and between my breasts, finally coming to rest upon my lower lip. Not hesitating, I opened my mouth invitingly, sucking and licking myself from her. It was, possibly, the most erotic and dirty thing I’d ever done."I taste good," I said, giggling, reaching down and drenching my own fingers, offering them up to her like some sort of pornographic. She had her own blanket on, but now half of it had come off while I pulled. I could feel her breasts on my chest and my erect dick was poking her lowerbelly close to her love hole. She still had a puzzled look on her face, but this time I kissed her. She neither reciprocated nor retaliated, but I kept on kissing her and pulling her closer. My hands started caressing and exploring her soft butts and her back. I started caressing her butt crack, moving my fingers over the crack. I pulled her. She had that feeling. Carly was doing things right. She wants more. She needed release! “That’s it. Run that tongue of yours inside my slit. YES! Do you feel the folds? There at the front; can you feel my clit bump? YES! Suck it! Suck my clit hard! Bite it for me. Scrape your teeth on the hood. Oooooh! YES Carly. You are going to make me cum!” Gasping for breath she shook. “Spencer! You pervert. Do you like watching your sister eat me? Are you jealous that it’s not you?” She pulled of.