I'm 18 years old, and there's no secret to anyone, really, that I'm a slut. Actually, most people in my life even know that I'm willing to take money for sex, and quite a few of them take advantage of that. Not that I mind.
This story is about me and Nathan, who is actually my sister's boyfriend. He's a couple of years older than us, and I know he likes to be with my sister because he likes the challenge. We're identical twins, both blonde, both slim, both very pretty, if I do say so myself. Sarah has bigger boobs than me, though, which is so not fair, and she's also a bit taller, all of this because I got very sick when we were little, and it stunted my growth.
Anyway. Sarah is also somehow still a prude. She almost never wears skirts or blouses, but pants and sweaters, and she almost never wears makeup or anything, and I know that she is notoriously difficult to get into bed, even for Nathan. But he's bossy, and he knows what he wants, and he also knows that once he's gotten her naked and horny, she lets him do anything.
But sometimes, I know he gets bored. He wants her to take a more active role, not just struggling and then giving up, but maybe seducing him every once in a while.
Luckily, there's me.
He knows how to tell the difference between us, obviously, like I said it's not difficult, and so I've never pretended to be Sarah. But a couple of weeks ago, I went over to their place, mostly because I was bored, and they live in the same building as me. Sarah was in school, but Nathan was home, watching TV and having pizza. He let me in, and I think he knew at once what I wanted. I was wearing a short, ruffled skirt, and a blouse that showed my cleavage. Now, I said Sarah has bigger boobs than me, which is true, but that doesn't mean that mine are small. They are certainly enough to turn heads, if I want them too. Especially now, being 5 months pregnant, and still breastfeeding my daughter, they are swelling and can almost match my sister's.
"Sarah should be home within half an hour," Nathan pointed out as I closed the door.
"Do you mind?" I asked, smiling.
He grinned. "Guess not."
So he let me into the living room, which was neat as always, except for the pizza box and two cans of coke he had thrown on the floor. He was a slob, Sarah was the neat one. On the TV was hockey, sound turned down.
"So," he said, throwing himself down on the couch. "What's up?"
He smiled and glanced at his crotch. He was wearing slacks, and I could tell he knew what was coming.
"Not much, it seems," I answered, teasingly.
He smirked. "Well, I guess you'll have to do something about that."
I walked over, swaying my hips, and went down on my knees in front of him, stroking my fingers along his thigh. "Oh, you'd like that, wouldn't you?"
He took a deep, shivering breath. "I would, yeah."
I moved closer, almost letting his crotch touch my belly. He looked hungrily at my bump. No one knows for sure who the father is, and I've been letting every guy I was with around the end of January believe that it might be them. It turns most of them on. Including Nathan.
I let my fingers move from his thigh to his crotch, softly squeezing and he moaned. I smiled, and bent down to kiss his crotch, pants still on.
"Oh, come on," he moaned, his fingers grabbing my hair. "Just ..."
I hushed him. I was in no hurry.
