Stepsister Begs to Cum: Must-Have Best Taboo Fantasy

So my stepsister begs to cum—I still get a little flush thinking about it—and it wasn’t some big dramatic thing, just a lazy Sunday afternoon that turned into her curled up beside me on the couch, wearing nothing but this thin cotton tank and those tiny sleep shorts. She started rubbing herself through her soaked panties, right there against my thigh, and every time I shifted she’d let out this shaky little breath and press harder, whispering please, please, I’m so close, just let me. I grabbed the lube from the side table because she was practically dripping but still wincing, and she slicked her fingers and then mine, guiding my hand to her hip while she ground down against my cock through the fabric, slow and desperate. Her eyes kept fluttering shut, then snapping open to check my face, like she needed to see I wasn’t going to stop her. The begging got quieter, more ragged—don’t make me wait, I’ve been good, I swear—and I could feel her whole body trembling, that tight little circle she was rubbing getting faster until she gasped and bit her lip and just let go, shuddering against me with this long, relieved sigh. We didn’t talk about it after. Just laid there, sticky and breathing, her head on my chest, and I knew we’d pretend it never happened by dinner.