She's yours and the king-sized bed is yours. Take her to bed.

You decide that your first foray into full-on **** will be less awkward with Abbie. You’ve always been able to talk to her about anything, and she’s been out in the open about sexual things. It’s less of a shock for you with her than it would be with your reserved mom.

You slide your hand behind Abbie’s neck and pull her into a kiss. Your kiss is hesitant, partly because you’re a virgin and you know your sister is much more experienced, so you’re nervous about not knowing what you’re doing when you get in bed with her, but mostly because she’s your sister and you feel guilty about having cast a spell to mess with her mind to make her want to fuck you.

Abbie isn’t at all hesitant. She throws herself fully and passionately into the kiss, tongue swirling, lips mashing, breath heavy. She grabs your tee shirt and practically yanks it off you. Once she tosses it aside she starts stroking, kissing, and licking your chest. “Fuck, you’re so damn sexy, Stretch. How did I not notice it before?” she groans. “I love the taste of your skin.” She slides down to her knees, her tongue trailing down your belly. “There’s more I want to taste,” she grins up at you as she tugs your jeans and underwear down.

When your stiff cock is freed, Abbie grasps it lightly and places a soft kiss on the head. It twitches at the contact and a drop of precum oozes from the tip, and your sister collects it on the tip of her soft, wet tongue. You grip her head with both hands, not to control her movement, but to keep your balance as your knees tremble. “Fuuuuck… Abbie.” You moan out.

“Fuck Abbie, what a good idea,” she giggles. She noisily slurps the head of your cock between her lips. She bobs her head just a bit, making her lips drag back and forth over the ridge of your glans. Then she pulls back to look up at you, grinning. “How do you want me, little brother?”

You manage to gulp in a breath and pant out, “Naked, to start.”

She laughs. “You’re full of great ideas today.” She hops up from her knees, pulls her tank top off, and shimmies out of her shorts. You get to see your sister’s gorgeous body fully naked for the first time and realize that you’re going to be able to get over your guilt about mind-controlling her with magic.

You grab your sister and pull her into another kiss. This time, you’re more aggressive. Your tongue invades her mouth, claiming it. Your hard cock is trapped between your bodies as they press together, grinding against her belly. She shivers and moans into your mouth. Her hand presses between you to grab and stroke your shaft.

Abbie pulls back from the kiss to moan, “I want you in me. Please Dave, don’t make me wait any more.”

You smile at Abbie and push her onto the bed on her back. She laughs in delighted surprise and scoots herself back so she’s in the middle of the big mattress. You get onto the bed and crawl between her legs as she spreads them wide for you.

As you move over her, she takes your cock in her hands and guides the tip to her slick, puffy pussy lips. She shifts under you, tilting her hips to align your hard, straining dick with her entrance.

You lower your hips, and Abbie’s warm, wet, tight cunt envelops your cock. “Ohhhh fuuuuck…” you groan as you push in to the hilt. Abbie’s head lolls back, her mouth open wide in a silent, breathless moan. She wraps her legs around you tight, pulling you harder into her.

You don’t want to cum already, but this is too much sensation. You can feel yourself losing control. You take a deep breath and try to relax and thrust slowly. Abbie must sense your panic. Her heels dig into the small of your back. “Give me your cum. Don’t wait. Please! I want it!” she gasps.

That tips you over the edge. Your cock erupts, pulsing and jetting deep in your sister’s cunt. She wails and hugs you tight with her arms and legs as her pussy contracts hard on your shaft and gushes around it.

You both lay still for a few moments, panting and sweating. You can feel your face heat up as you flush with embarrassment. “You’re so sexy, and it felt so good — I didn’t want to cum so fast.”

Abbie smiles up at you and strokes your cheek. “Never apologize for cumming in me, Stretch. It was amazing.”

You roll off her and sprawl on your back on the bed. Abbie snuggles up against you with her head on your shoulder. “It was your first time. I wasn’t expecting a marathon.” She kisses your pec. “I came as hard with you just now as I ever have. There have been guys who went forever, and never got me off.”

It occurs to you that you can find out for certain how it was for Abbie. “Tell me the truth, was it good for you?”

She strokes her hand over your chest. “It was wonderful. I mean, it wasn’t some wild acrobatics or kink-fest, but plain old vanilla missionary with you felt better, more satisfying than anything like that I’ve ever done. I think it’s because of how much I love you, Stretch.” You feel a little better once you get that answer, but still would have liked to have lasted longer.

You notice the clock on your mom’s nightstand. “Abbie, you should be getting ready to leave for your final,” you remind her.

She pouts, then sighs and gets out of bed. “I’d rather stay here with you and make you the happiest guy in the world, but you’re right. There’s no point in blowing two years of work at the finish line. I have the rest of my life to spend with you.” She smiles wide at that idea as she picks up her clothes from the floor and pulls them on. “Anyway, you’ll have Mom to keep you busy and happy while I’m gone. With me out of the house, I bet she won’t be as hesitant to get naked for you.”

You can’t help grinning at how willing to share you the spell made Mom and Abbie. “You’re the best, Abs,” you tell her. She beams at that, and gives you a long, tender kiss before she leaves.