My eyes immediately popped open. I saw Jenna squatting above my crotch, totally nude, one hand on the back of the couch and one holding my pecker steady as she eased herself down onto it, slowly bending her knees at my sides. After the initial penetration, she slid down the full length of my steel-hard 10 inches effortlessly. It was a very snug fit; she was red hot and dripping wet. I felt the tip of my cock find the end of her wonderful wet hole; if she wasn’t so wet, we might never have fit together as she was such a small petite girl and my erect dick was pretty damn big. In fact, at that exact moment, it never felt bigger. In shock, I looked down at her, fully expecting us to be looking each other in the eye and finally dealing with the reality of what was going on. But all I could see was the top of her head as she looked down at our genitals as mine disappeared into hers. Her short blonde hair almost grazed my chest as she watched the penetration. Her little teenage cunt gripped my cock tightly, especially the muscles just inside her lips. Still looking down at our connecting groins, she slowly and carefully started moving her hips, resulting in a very slight inch-deep fuck-motion. It was probably all she could take of my massive dick. She raised her head up towards the ceiling and I awaited eye contact once again…but her eyes were squeezed shut as she arched her back in pleasure. She was obviously convinced that I wouldn’t wake up. Now her sweet little titties were staring me right in the face; 2 erect nipples poked out of the small but perfect mounds and begged to be bit and sucked. But I resisted. She was lost in a haze of lust and desire and was concentrating on the feeling between her legs. I felt that if I shocked her out of this, it would end. And stopping my hot teenage sister from fucking me was the last thing I wanted to do.
Jenna had increased the length of her hip strokes. We were almost at the point of really fucking. She brought her head up again and I quickly went to sleep…She was still holding herself over me on her bent knees, arm on the back of the couch, never really coming down all the way; her ass hovered inches off of my balls with her every downstroke. Eventually she increased her fucking until most of my big dick was swallowed up into her sopping pussy with each stroke. She could take the whole thing in with ease now. My hips started moving; the pleasure I was feeling was too much to ignore. She felt me moving with her and put her hands on my chest. She transferred her weight from her knees and arm onto my body. Our pubic hair finally met, grinding together as we fucked. It was glorious. My hands found her ass and helped her up and down. She started making noise again and looked up into my eyes…I looked straight back. No more secrets. The look that immediately appeared on her face was strange; a mix of great pleasure and kind of a pleading… She kissed me on the lips and quickly blurted out, ‘Please don’t stop Andy. Please don’t stop. Just fuck me it’ll be OK just keep…fucking…me…’ I smiled back at her and said ‘Jenna…You’re so fucking good I couldn’t stop even if I wanted to. And I don’t want to…ever…’