I'm currently seeing a 25-year old girl (call her Pam), and she's a total freak. Loves to roleplay twisted shit like daddy/daughter, rape, anything you can imagine. She also has the biggest fucking natural tits I've ever seen on a girl her size. She has to special order bras with crazy sizes like 30F, which I didn't even know was a thing. These tits are perfect - pale, soft, shapely - and her little pink nipples are always hard. No joke, 24/7, pencil eraser madness. She's down to fuck 4-5 times a day, and she lets me do anything I want. The harder/faster, the better.

She's all I ever wanted - or so I thought. Lately, I've felt this aching desire to push the envelope. More specifically: I've thought about asking her to roleplay as her sister (Shelly). Shelly is 19, far more petite than Pam, nowhere near as busty, and I don't think anywhere near as sexually open. Pam is also very, very protective of her younger sister. I feel like this is the one line my girl won't cross, but I think that's exactly why I want it so badly. I want her to pretend to be her little innocent sister while I fuck the shit out of her.

But that's not all. I really do want to fuck her sister. Not behind Pam's back, either. I'd never cheat on her. But I want to fuck her sister while she watches in the same bed. I want her to see me shoving every inch of my cock deep inside her precious little Shelly. I want her to see me pin her petite little sister to the bed under all of my weight, thrusting madly at her tight little pussy over and over again until I explode inside her. I want Pam to see and feel me fucking Shelly with everything I've got, my hips slapping her tiny tight ass into total submission.

Then I want everything else. I want them to fuck each other for my pleasure, fingering each other, eating each other's pussies, scissoring and humping and cumming together. I want them to do all of this because I said so, not because they want to. Part of me really wants them to hate it, even. And I want to insert myself into the proceedings whenever I like. My cock alternating between their mouths and pussies and asses, slapping against all four of their tits, pressing their faces together to catch all my cum, spraying between their pussies as they scissor.

It's all so fucking awful. I know she'd shit a goddamn brick if I even mentioned it, and she wouldn't be out of line. It's disturbing stuff. But if a genie granted me one wish right this second, I'd wish for my girl and her sister in my bed, fucking me and each other like animals every night for the rest of my life.