“Let’s get more comfy.” She tugged at my cock as she stood. She used it as a leash, leading me with her as she moved to the sofa. I watched her hips sway, the way the bikini bottoms hugged her and rode up a little. She pushed me down and pulled my jeans the rest of the way off, and then my boxers, too. She knelt between my legs, batting at my cock with her fingertips, her nails grazing the shaft lightly.

“How do you like it so far, little brother?” Her mouth was inches from the tip. I could feel her breath, and could even smell it, the cherry pink lolly. I wondered if she still tasted like it, and found myself wanting to kiss her. That seemed so much more wrong than anything we’d done, somehow.

“Dawn…” I reached out to touch her hair and tucking it behind her ear.

“Don’t say no.” She shook her head and smiled, moving her mouth back over me now, covering me and taking me in. I groaned, moving my hips with her, I couldn’t help it.

“Oh, hell,” I moaned. “This is so wrong!” Her mouth was heaven, slick, hot heaven up and down on me, her fingernails grazing my balls now.

She came up for air, still stroking me. “That’s why it feels so good,” she whispered, her eyes on mine. She was right, and I knew it. Aside from the physical sensation, which was unbelievable, it was also the fact that Dawn was my sister, and that we were both round the twist to even be thinking about this, let alone actually doing it on our parents’ sofa.

She went back to work on me, and I could feel my pent-up lust for her ready to explode. I reached my hand down, tentative at first, feeling her breast through her bikini top. She smiled around my cock, still working it in and out of her mouth, and she didn’t miss a beat as she reached around and undid it, exposing her flesh to me. Oh my God, she was incredible.

I rolled her nipples in my fingers as she sucked me and that made her move up and down faster and moan around my cock, sending vibrations down my shaft. Her tits swayed as she moved, brushing up against my thighs. I put my hand on the top of her head, pressing her down a little until she gagged. I groaned, and she smiled again around my shaft, still not letting up. I wasn’t going to last much longer, and I think she knew it.