Dear FemdomU

I hope you’ll publish my letter, as my fingers tremble with excitement typing this. My cock stiffens remembering what happened just an hour ago… her warm tongue tracing my inner thigh while her friend watched, both of them laughing at how quickly I responded to their touch.

I call myself ‘bitchboy’ now because that’s what she whispers in my ear when I’m on my knees, face glistening with her wetness, begging for permission to touch myself. The way she grips my hair, forcing my mouth against her most intimate parts until I can barely breathe… that story deserves its own letter.

Yes, she’s my step-sister, but we met as adults when our parents married. There’s no blood between us, just the sticky evidence of what happens when she decides I’ve earned a reward after servicing her and her friends all afternoon.

Our Origin Story

At 18, I was a first-year community college student still bunking with my mom. Dad split when I was young, so it had just been the two of us for as long as I could remember. Then my world flipped upside down. Mom met Fred, they fell hard and fast for each other, and before I knew it, they were engaged. The package deal included his daughter, nineteen and a year older than me, who lived with him but wasn’t doing the college thing.

I still remember the day we moved in together. They got a new house, one with enough rooms for our expanded family. I had already met his daughter Kirsten briefly – tall, athletic build, with long dark hair that fell past her shoulders and a confidence that made my stomach flutter whenever she looked at me.

The first big power play came on day one. Our bedrooms shared a single bathroom, so when you were using it, you locked the door on the other side. I was taking a shower, hot water streaming down my naked body, when her door to the bathroom suddenly popped open. My heart raced as I realized I was completely exposed behind the clear glass.

Kirsten entered slowly, her eyes deliberately traveling up and down my wet body, lingering on my most private areas. I felt myself responding to her gaze despite my embarrassment, a warm tingling sensation spreading through me. She picked up my discarded underwear with two fingers, her lips curling into a smirk. “No fucking way,” she said, her voice husky. “No fucking step-brother of mine is going around wearing loser underwear.” She bit her lower lip, eyes flicking back to my body behind the glass. “You must have something better…” Then she disappeared into my bedroom. Water still dripping from my aroused body, I wrapped a towel loosely around my waist and followed her, my pulse pounding in my ears.

I walked in to find her rifling through my underwear drawer, her slender fingers deliberately slow as they sorted through my things. My heart hammered as she pulled out my plain white briefs one by one, tossing them into the trash with exaggerated disgust. I stood frozen, water droplets sliding down my chest and abdomen, the towel clinging precariously to my hips.

“What do we have here?” she purred, discovering the secret stash at the back of my drawer. She extracted a skimpy red bikini brief, dangling it from one finger. “Someone’s been hiding his naughty side.” Her tongue darted out to wet her lower lip as she appraised me. “Put these on. Now.” She tossed them at my chest, her eyes darkening with unmistakable hunger.

My fingers trembled at the knot of my towel. I turned away instinctively, but her voice cut through the air: “Face me when you change.” The command sent a jolt of electricity straight to my groin. I slowly turned back, letting the towel fall away. Her gaze dropped immediately, lingering on my growing arousal as I stepped into the tight briefs, my cock swelling against the thin fabric until it strained painfully against the waistband.

“Look how hard you are for me already,” she whispered, stepping closer until I could smell her perfume. “These show off everything, don’t they?” Her fingertip traced the outline of my erection through the tight material, making me gasp.

What came next was a clear declaration of how my life would change, how I would be of service to her, at her command.

“We’ll go shopping today and pick you out some better clothes, but for now you’re going to do something for me.” And with that, my step-sister was naked, laying on my bed, her legs open. “Taste my pussy, brother” was her command, and again, my body obeyed without hesitation.

Sincerely,
bitchboy