She's his girlfriend

"She's my girlfriend." Jamal barely manages to squeak out. This could make the situation particularly awkward.

But Erin greets the news with a big smile.

"You.. you made out with my girlfriend?" Jamal asks, his expression puzzled, probably not sure to feel betrayed or turned on.

"Yup and she made out with me." Erin answers, licking her lips. She steps up to Jamal and places her hand on his crotch. She's not done with him yet. "Do you like the idea of us making out?"

Jamal doesn't answer.

"Do you like the idea of her going down on me? Licking my pussy? Licking my asshole? Tasting your cock in there?" Erin's excited breasts heave. Jamal stares at them. "Would you like to help me turn her into a slut?"

"I... don't think that's going to happen." Jamal tries to stay composed.

"Why not? She fucks you doesn't she?" Erin is trying to find an upper hand in this contest of yours, you can tell. That's the opening she sees. Jamal nods. "And I bet you know what really turns her on." Jamal nods again. "Wouldn't you like it if Nathalie were as big a slut as I am? Maybe... bigger?" Jamal doesn't answer. But it's clear from the growing bulge in his pants that he would indeed like it. "Then tell me what get's her going. Tell me what turns her on."

Jamal hesitates for a moment, but his raging erection is too hard for him to disobey "Well, it's kinda weird..."

Erin smiles. "There's nothing wrong with weird. Tell me. Is it fisting? Is it piss? Is it the thought of fucking her sister?" You can tell she's thrown that one in for you. A little reminder that when she wins this enslavement contest you won't get to see her and her sister act out your ultimate fantasy.

Jamal almost laughs, as if the thought of those nasty things never entered his mind. "No... no... it's, um, it's this cologne I wear sometimes. She just goes nuts for it."

And Erin laughs out loud, as if she can't believe it would be so easy.

Long after Jamal has departed, you and Erin lounge on your bed, your fingers curling into her ever wet pussy. "He has no idea what's about to happen, does he?" You ask.

Erin scoffs "He's not important anymore. By this time tomorrow his ex-girlfriend will be my ****, and I'll be the winner of this dumb little contest."

"Do you really think it'll be that easy?" You ask.

"You have no idea how close I was today. A dumb scent is more than enough to push this girl into total slut-dom."

"And then what?" You ask.

Erin glances up at you. "What do you mean? The rules of the contest are clear. For someone to win, the target has to declare their enslavement to the world."

"Exactly" You say. "If you're so confident it's going to happen, how do you plan on making her do that? I'm sure you've given it some thought."

Erin smiles, and wiggles around your finger. She's very pleased with herself. Of course she's thought of it.