“Ellie, do you want to-?"

“Fuck, yeah," she interrupted and then pulled me down on top of her. My lips found hers and then I was flat on top of her, our bodies grinding against one another while our tongues went to war.

Ellie's hands clawed frantically at my back for the first few seconds, and then eventually she managed to start tugging my shirt upwards. I took the hint and pulled away long enough to whip my shirt off and gulp down some oxygen. And then she was pulling me by the neck back down to her so our mouths could crash together once again.

With a burst of energy, I sunk my hands beneath her shoulders and then rolled us over, Ellie whooping in surprise and then laughing hysterically once she got her bearings. It was my turn to feel up her naked spine while she lifted her shirt and flung it away.

I fumbled the first few times at her bra strap before Ellie reached back and unsnapped it casually. And then her elbows were jerking left and right as she slipped the cups away, leaving her torso bare before me.

I couldn't help but sit up and take her breasts into my mouth once again.

“Mmm, taste my nipples, you fucking stud," she growled into my ear, gripping my head in her hands and holding me tight to her chest. But as much as I enjoyed it, I had a clear goal in mind. I wanted INSIDE her body, and I wanted inside NOW.

My hands were tugging at the waist of her jeans, which barely budged.

The same spray-painted tightness that outlined her ass so very well now proved to be a real problem for easy removal.

Ellie finally dismounted me and stood on the floor to drag both her jeans and panties down to her ankles. She stepped out of them and with a brilliant smile, she pirouetted to show off her astounding naked body. At 5'8", she was about the same height as Cherys. Her hips were narrower and her even though she didn't have the big breasts of her older sister, Ellie's nice C-cups still sat high on her chest and wonderfully shaped. I also got my first good look at her pussy, her dark pubic hair trimmed to a thin triangle inside her bikini tan line and an inviting pinkness showing beneath her puffy lips.

“Your turn," Ellie husked as she knelt to the floor. Her hands went to the fastener of my jeans and she expertly began to pull them off of me.

I lifted my hips off the bed to help her. For a few seconds, everything was automatic. Monica and I had undressed each other many, many times.

But then just as my boxers went low enough to expose my erection, it dawned on me that this was Ellie, about to have sex with me and not

Monica, who would shut me down at the Last moment. The idea got my dick so hard it slapped against my own pelvis hard enough to make a loud noise.

“Ooh... is all that for me?" Ellie purred.

“Every inch," I growled.

Her right hand reached out and raised my cock to a vertical position.

She leaned forward then and brought her face just over the crown. She paused for just a moment and looked up into my face. With total sincerity, she half-whispered "I'm a total slut for you, David. I always have been.”

At the time her words didn't make much sense to me. Only later would I find out what deeper meaning there was. But in that moment, I didn't care. Hearing Ellie call herself my slut just got me hard and even more eager to bury my dick inside my first pussy.

And then Ellie's head dropped down and she was coating my rod with the warm, wetness of her mouth. I just gasped in delight. But I wanted even more.

Ellie seemed to be on the save wavelength as me. She only bobbed up and down long enough to get me wet and then she got up and turned around, laying back across my bed with her crotch right at the edge.

“Come fuck me," she ordered.

I didn't need any further invitation. I turned around and stepped between Ellie's spread legs. My finger went out first and tested the waters, making sure she was good and wet. I hadn't even needed to go down on her, so maybe Ellie really was a slut for me.

I leaned over to my nightstand table. I'd kept a brand new box of condoms there, unopened and waiting for Monica's ‘right moment’. Ellie caught my movement and then reached her hand to my forearm.

“You don't need those. I'm safe." And then she Lay back and smiled, twisting her torso into an erotic pose worthy of sculpture. As she did this, the image of her big sister suddenly descended over Ellie's naked body. And then I was moving forwards.