Hey stupid brother, what are you doing here... This!!! That my panties.

Really? You'd do that? Fine, I guess I could share them with you. But just this once, okay?

Mmmm, okay. Just make sure you don't mess them up, because I really like them too.

I take my brother's cock in hand and stroke it with the silky material of the panties, feeling them slide over his flesh as I move him closer to release. "Do you want me to make you cum?" I ask breathily, knowing he can't resist the sexy feel of the fabric against him.

My heart races as I continue to stroke his cock through the soft material of my panties, wondering if he's even listening to me at all. The feeling of him growing harder beneath my touch is enough to make my own body respond in kind.

I know it's wrong, and that I shouldn't be doing this... but for some reason I can't help myself. Maybe it's the thrill of knowing we're related, or maybe it's just the pure lust coursing through me. "Because you feel so good," I manage to say between kisses down his stomach.

Stacey hesitates, then bites her lip as she bends over, exposing herself to him. She parts her ass cheeks, revealing the soft, smooth skin beneath, anticipating the feeling of his cock against it. Her breath comes faster now, and she moans quietly at the thought of being taken roughly from behind.

A sharp cry of pleasure escapes her lips as he violates her ass with his cock, stretching and filling her in one hard thrust. She presses back against him, wanting more, moaning loudly as she feels herself being claimed by him. Her fingers dig into the sheets beneath her, desperate for purchase as she tries to hold on through waves of ecstasy coursing through her body.

The feel of his cock pounding deep inside her ass is indescribable; it's dirty and wrong but so unbelievably right. Her hips begin to move with his thrusts, encouraging him deeper still as she feels the spark of release building within her. "Oh god yes..." she whispers breathlessly.

Her voice raspy with pleasure and desire, she moans his name as he takes her roughly from behind. The feel of him deep inside her ass is incredible; dirty but so good. "Mark..." she breathes into the phone, not caring who's on the other line or what they hear. All that matters is this moment, this connection with her brother and the man she loves. Her nails scrape down his back as he thrusts harder, closer to release.

My voice grows hoarse as I moan his name louder, desperate for him to feel the weight of my desire. With each thrust, he pushes deeper inside me, claiming every part of me until there's nothing left but raw need and want coursing through my veins. My body tenses in anticipation of release, and I can't hold back any longer. "Oh god Mark," I cry out, coming hard around him.

His thrusts grow faster and more urgent as he follows me over the edge, filling me with his hot seed until he collapses against my sweat-soaked back, spent. For a moment we're locked together, panting and trembling from the incredible high we've shared. "Fuck," he whispers hoarsely into my ear, "That was..." He hesitates, searching for the right word.

"Insatiable?"

As he lies on top of me, still hard inside my ass, I can't help but laugh a little at his choice of words. "Yeah," I manage to croak out between gasps for air, "That's one way to put it." Taking a deep breath, I lower the phone from my ear and whisper into it, "Mark... you wouldn't believe what my brother just did to me..."

My words are heavy with meaning and desire as I tell Mark about the things my brother just did to me. "He fucked me so hard," I breathe, "I never thought anyone could make me feel like that." My hips twitch involuntarily against my brother's, wanting him deeper still. "And he was rough...oh god, Mark..."

The feeling of his words, of him hearing about it from me instead of seeing for himself, only serves to fuel the fire inside both of us. I can feel myself growing wet again just thinking about how he must be reacting right now. It's intoxicating, this power I have over them both.

As I listen to Mark's frustrated gasps on the other end of the line, I know he's struggling not to lose it completely. He tries to tell me that we should stop, but it comes out as a hoarse growl mixed with begging and pleading. "Oh god Stacey," he whispers desperately, "Please tell him to make you cum again." The need in his voice is so intense it almost brings me over the edge all over again.

I smile into the phone before whispering back, "Maybe if you were here instead of listening...?"

My eyes widen in surprise as I hear the unmistakable tone of desire and lust in Mark's voice. He really does want this, wants us both. It gives me a surge of power, knowing that even though we're related to his boyfriend, he still craves us.

I push my ass back against my brother harder, feeling the familiar shape of him filling me up. "He likes it," I manage to pant out through gritted teeth, "he likes hearing about it...just like you." My hand moves lower on his body, tracing circles around his engorged member, taunting him with how wet and ready I am for more.

Taking a deep breath, I lower the phone away from my ear and whisper cruelly into it, "Mark... you're such a cuck for him. Why don't you just admit that we're better? We could have so much more fun if you weren't in the way." I can feel the heat rising to my cheeks as I say these words, even though part of me knows they aren't true. But right now, in this moment, it feels good to push him aside and make him jealous.

My fingers tighten around his cock as I continue, "And don't you dare tell anyone about this. It was just between the two of us, remember?" My heart races at the thought of what would happen if someone found out; the consequences would be disastrous for all of us. But right now, with my brother's hard length buried deep inside me and Mark's frustration echoing