Tell Abbie she’s the sexiest girl you know, but it still feels wrong to do that with your sister

You lick your lips as you look down at Abbie’s toned, naked body. If she were any other girl besides your sister, you wouldn’t hesitate a second after that question. Your hands move to her shoulders and you gently push her back away from you. “Abbie… you are the prettiest, sexiest girl I’ve ever seen. If you weren’t my sister… I’d be too petrified to talk to you. I know this is the best offer I’m likely to ever have in my life.” You chuckle.

Then you turn serious, “But you’re my sister, and that makes it feel weird… wrong. And I know it’s the spell making you feel this way. I did this to you. I’d feel guilty if I took advantage of that.”

She listens to what you have to say, nodding. “Do you really mean that? You’d just feel weird and guilty?” She shakes her head. “I think… there’s a part of you that wants to get off on this. But you think you’re supposed to not want it.” She steps closer to you again. Her small, warm hand slides around the back of your neck. “You’ve got some dark urges, Stretch.” She grins mischievously. “Otherwise, you wouldn’t have been beating off over the fantasy of making an unsuspecting girl into your fuckslave without her consent.”

She squeezes the back of your neck, and pulls your head down. Her warm, naked body presses against you. She murmurs low in your ear. “I have dark urges, too. Even before you whammied my mind, I had passing ‘what if’ thoughts about you from time to time. And I’ll bet you’ve had dreams, maybe even daydreams, about me. Brothers and sister all might, otherwise they wouldn't need laws against it. Maybe your spell is just the excuse we need to act on our dirty fantasies.” The tip of her tongue traces around your earlobe. The sensation makes your cock twitch. Your sister grinds her flat belly against the bulge.

“I’ll tell you a little secret I’ve learned, Mister Mind-Control Magician.” She chuckles throatily. “Sometimes feeling guilty and ashamed about who your fucking, or how, makes it even hotter.”

Abbie’s body slides down your legs. Her hands move to your crotch, they open your fly, tug down your jeans and boxers. Your sister exposes your rock-hard cock.

“I notice that you said you’d feel weird and guilty, but you haven’t told me no. If you had, I wouldn’t be able to do this. Would I? Even when you stopped me before, you said ‘wait’ and ‘you don’t have to’, never ‘stop’, or ‘don’t’.” She grins up at you, looking like she knows she scored a point. “Have I waited long enough, Sir?” she says in a pretty, pleading whine.

All you can do is moan “Ohhhh fuuuuck…”

She smiles even wider. “I could take that as an order, you know.” She giggles. Her fingers start to trace up and down lightly along your shaft. Your cock strains and drools precum in a long, sticky line to the floor. “Man-up little brother. Own your fucked-up dark shit, and fuck your sister.”