The Sister, Part Twelve [M19/F18] [Cheating] [Erotic Couplings]

**PART TWELVE**

“I want to fuck my girlfriend’s little sister.”

The words slipped out of my mouth before I could stop them, echoing her phrase as an answer to the question. I was just saying what I had to; although such justification didn’t really work that well when the statement was undeniably true. It had just been a lot easier when my reluctant lust had temporarily buried the important details along the way.

“Good boy,” Natalie purred. Right away, her idle touching below turned into a more active grip. A few pointed tugs put me dangerously on edge, since I was already hard simply from her hand’s presence down there. If I was the one handling myself, I could be a little more deliberate about the pacing. But this was the work of the eighteen year old temptress, and she was about to ruin what was supposed to be reserved for her tight, young body. “Forget about Jessica. I’m a better fuck; trust me.”

She knew exactly what she was doing. If her touches alone weren’t enough, the mental image of screwing her added fuel to the flames as well. “Natalie-” I started. Fuck, I was NOT about to get off to a fucking hand job after all this.

“I know.” She said the words in a pout, before nervously biting her lip. Except it wasn’t nerves at all; she was just putting on a show. Her gaze dropped to my manhood during the moment of false innocence, but then her deep eyes flitted right back up to meet mine. “You do want to fuck me, right?” Her question was punctuated with a deft squeeze and subtle jerk that almost made me lose control right then and there.

Blurting out an impulsive, “Yes,” I tried to figure out how to make that happen. My hands were still holding her bare sides, but I couldn’t do much to reposition Natalie while her grip below had me in such a precarious spot.

Before I could figure out what the best move was, she decided for us. “Then let’s do this, babe.”

Out of nowhere, she dropped to her knees.

It all happened so fast. There was some grace to it, but I was still caught completely off guard with how quickly she made it down there while somehow keeping her eyes on mine. With one more effective tug on my hardness, I caught the glimpse of a smirk before she parted her lips and effortlessly drew me all the way down her throat.

I was gone in an instant. Her mouth was warm and inviting, and the way she closed her eyes while taking me made the whole thing even hotter. A topless Natalie, a mini Jessica, going down on me. She let me simply sit in her throat for a few seconds, almost showing me that she could easily handle it without flinching, and then worked her way up and down my shaft with a few bobs of her head.

The last bit of resistance I had was shattered when she got her tongue involved. Unable to help myself, I thrusted into her movements and exploded just a few seconds later. Quietly grunting in pleasure, I released my load in several bursts into her waiting mouth. Natalie kept working me, swirling her tongue around my cock and practically encouraging every last pulse until I was satisfied. At some point, I realized that I was grasping her hair and holding her in place, but couldn’t remember when I first grabbed it. The grip was probably completely unnecessary, too, as she seemed more than happy to stay right where she was whether I was involved in keeping her there or not.

Natalie stayed on her knees and adjusted her technique every few seconds. Despite how frustratingly early I ended up losing control, it was hands down the best oral experience I ever had. The girl matched my rhythm perfectly, and coaxed me perfectly through the whole thing with her throat and tongue. Even at the end, she made the effort to gently suck out the last few drops, finishing things off by flicking her tongue out to lick the tip as she finally allowed me to pop out of her mouth.

My amazement was fleeting, however. As I came down from the incredible peak, reality began creeping back in. Fuck. Fuck, fuck, fuck. FUCK.

Natalie’s eyes fluttered open and I found myself face to face with the sobering image of who I just had a wildly inappropriate experience with. It didn’t matter how good it felt. This was Natalie’s sister. It’s not like that was news; I had thought it a dozen times already, and said it out loud at her request pretty recently. But that was when she had tempted me enough that my lust won out over my more rational mind. Instantly letting go of her hair, I found myself more confused than ever. Because yes, there was a lot of instant regret and guilt about what we had just done. And yet, there was an undeniable hunger for more of her in the back of my mind, despite the post-nut clarity.

And she looked so damn pleased with herself.

Standing back up as my grip on her hair loosened, Natalie scooped up her bikini top along the way. With her other hand, she took my wrist and pulled me fully away from her locks so she could step back. For a moment, I was grateful for the healthy distance while I was so flustered and conflicted about what we had just done, until I found myself faced with a whole new temptation. Before, we were too close for me to get a good look at her; there also wasn’t a great angle when she was on her knees. But now? I had an unfettered view of her bare chest.

“Better than Jessica?” she coyly asked. That could’ve been referring to a few different things. Without waiting for a reply, she just brushed her hair back and smiled. “One hole down, babe. If you’re a good boy, you might just get to fuck the other two before midnight.”

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Source: reddit.com/r/eroticliterature/comments/znoh4b/the_sister_part_twelve_m19f18_cheating_erotic