I stepped into Sarah's room, a familiar yet strange feeling washing over me. It had been a week since she moved away for work, and I missed her terribly. We were like sisters, sharing everything, and her absence left a gaping hole in my daily routine. I wandered around her room, picking up her perfume and spraying a little on my wrist, instantly feeling closer to her. The scent was a mix of wildflowers and something musky, a unique blend that suited her free-spirited nature.

As I placed the perfume back on her dresser, my eyes caught a glimpse of movement in the mirror. I spun around, startled, only to find Sarah's brother, Daniel, standing in the doorway, wearing one of her silk robes. My heart skipped a beat at the sight. Daniel's tall, muscular frame filled out the robe in ways that made my mouth go dry. The fabric hugged his broad shoulders, and I could see the outline of his hardening cock beneath the thin material.

"Oh my God, Daniel!" I exclaimed, covering my mouth with my hand. "What… what are you doing?"

He smiled, a mischievous glint in his dark eyes. "I was just… you know, missing Sarah too. Thought I'd try on some of her stuff. It's weird, but it kinda feels like she's still here."

I couldn't help but laugh, a nervous giggle escaping my lips. "You're crazy! What if someone saw you?"

Daniel took a step towards me, his bare feet padding softly on the carpet. "Only you, Grace. Only you saw me, and I think you like it." His voice was low and seductive, sending shivers down my spine.

I swallowed hard, my eyes drawn to the robe's neckline, which revealed a hint of his defined chest. "I… I don't know what you're talking about," I lied, my voice barely above a whisper.

He took another step, closing the distance between us. "Don't you?" he whispered, his warm breath tickling my ear as he leaned in close. "You're blushing, Grace. And I can see your nipples hardening under that shirt."

I gasped as his words sent a jolt of arousal through my body. It was true; I was turned on by the sight of him in Sarah's robe, and my body was betraying me. I tried to step back, but the dresser was behind me, leaving me nowhere to retreat.

Daniel's hands gently grasped my hips, pulling me closer. "It's okay, Grace," he murmured, his lips brushing against my neck, sending sparks of pleasure down my spine. "I won't tell if you won't. Let's just… enjoy this moment."

I felt my resistance melting away as his lips found mine, soft and insistent. I kissed him back, my hands reaching up to tangle in his hair, pulling him closer. His tongue danced with mine, and I could taste the hint of Sarah's perfume on his lips, a strange but arousing sensation.

Breaking the kiss, Daniel stepped back, his eyes burning with desire. He slowly untied the robe, letting it fall open to reveal his naked body. His cock was thick and erect, the head glistening with pre-cum. I couldn't tear my eyes away, my pussy throbbing with need.

"Fuck, Daniel," I breathed, reaching out to stroke his length. "You're so…"

He placed his hand over mine, guiding my touch. "I've wanted this for so long, Grace. I've watched you from afar, wanting to taste those full lips, to feel your soft skin against mine."

His words only fueled my desire, and I found myself pushing him back towards Sarah's bed. As he sat on the edge, I dropped to my knees, taking his cock in my hand and stroking it firmly. I leaned in, my tongue flicking out to taste the salty sweetness of his pre-cum. Daniel groaned, his hands gripping the bedsheets as I took him deep into my mouth.

I sucked and licked, savoring the taste of him, feeling his hands in my hair, urging me on. My own need was building, and I wanted to feel him inside me. I stood, pulling off my shirt and bra, revealing my heaving breasts. Daniel's eyes darkened as he took in the sight, his cock twitching with anticipation.

"Fuck, Grace," he growled, pulling me onto the bed and onto his lap. I straddled him, guiding his cock to my entrance, slowly lowering myself onto his throbbing length. We both moaned as I took him in, my walls stretching to accommodate his size.

I began to ride him, my hips moving in a slow, sensual rhythm. Daniel's hands gripped my ass, helping me lift and lower myself, filling me with his hardness over and over. I leaned forward, my breasts brushing his chest, as I kissed him hungrily.

"You feel so fucking good," he grunted between kisses. "I always knew you'd be wild, Grace. Sarah told me about your secret fantasies."

His words shocked me, but also excited me. I pulled back, looking into his lust-filled eyes. "She told you what?"

Daniel smirked, his hands gripping my hips, forcing me to grind down on him. "She said you had a thing for me, that you'd confessed to wanting to fuck me one day."

I felt a surge of embarrassment, but it only fueled my desire. "And what if I did?" I challenged, rising up and slamming back down onto his cock.

Daniel groaned, his eyes rolling back slightly. "Then I'm glad I wore my sister's robe today, because I've been wanting to fuck you too."

His words sent me over the edge, and my orgasm hit me like a wave. I cried out, my body trembling as pleasure coursed through me. Daniel held me tight, his hips thrusting up to meet mine, and I felt his cock twitch and pulse deep inside me as he came, filling me with his warmth.

We collapsed onto the bed, our hearts racing and our bodies glistening with sweat. I lay on top of him, my breasts pressed against his chest, feeling his cock still throbbing inside me.

"I guess we both got what we wanted," I said, breathless.

Daniel smiled, kissing my forehead. "And Sarah's bed got a show it'll never forget."

I laughed, rolling off him and lying beside him, feeling his cum leaking out of me. "I think we should keep this our little secret. Sarah doesn't need to know about her brother's kinky side."

He nodded, reaching for my hand. "Agreed. But I have a feeling this won't be the last time we find ourselves in this situation, Grace. I've got a whole new appreciation for my sister's wardrobe now."

I smiled, my mind already spinning with ideas of future encounters, knowing that this was just the beginning of a very erotic adventure with my best friend's brother.