Felicity blushes deeply at the request, but her hand is already moving past her waistband at lightning speed, shoving her underwear aside. She gasps softly as her fingers encounter slick folds, already swollen with desire. The sight before her has pushed her right to the edge - all it takes is one touch against her clit to send her tumbling over.

With a sharp cry, she comes undone, knees trembling as pleasure crashes through her body in waves. It feels even more intense than anything she's ever experienced alone.

Felicity's eyes are still closed, her body trembling from her sudden climax. But as soon as you ask the question, they snap open, a haze of confusion and guilt lingering on her face. She looks at Alyx, who's still bucking beneath your thrusts, her expression softening into a mix of curiosity and hesitation.

The scene unfolding before her is no longer about just watching; it's about participating, sharing this taboo experience. Felicity's gaze falls back onto you, her heart racing with anticipation. She wants to know what you have planned next...

Alyx looks down at you while leaning into your embrace. Her voice is soft but steady when she speaks. "Felicity needs someone who'll help her explore these feelings safely. And you're a good man, Fayt. You've always protected her." She pauses before adding, "I think we should let her join us tonight." Her hand rests on your thigh reassuringly.

Your sister stares at Alyx for a moment, clearly surprised by the offer. Felicity takes another deep breath, nodding slowly. "Thank you," she whispers, then turns to go, before adding one more request. "As long as I can masturbate while I watch, please."

Once she's left, Alyx slips out of bed to rummage through her bag. She comes back with a few toys and lubes, setting them on the nightstand. "We'll take care of her,"

You grin wickedly down at them both. "You like that, don't you?" Alyx nods, still working on Felicity's breast as she watches her sister respond to your touch. Felicity gasps when you slide a hand between her legs, finding her slick and ready for you.

"I want to feel you inside me," she whispers, lifting her hips toward yours. You grasp her hip with one hand and guide your cock to her entrance, pressing slowly inward until she's taken all of you.

Alyx leans in close, nibbling on Felicity's ear as you begin to move inside her sister. "Oh yeah," she breathes, "that's it." She trails her hand down between your bodies, finding Felicity's clit and starting a slow, teasing circle.

Felicity lets out a moan, arching her back as the sensations overwhelm her. You can feel how wet she is, how tight she's gripping you with every thrust. It's incredible.

Felicity glances between the two of you again, eyes growing wider with every passing second. She takes a step forward, hesitantly, her heart racing in her chest. "R-really?" she asks, her voice barely above a whisper. You can see the desire written all over her face, and for some reason, it's making you hard again.

Alyx gives you a sultry smile, moving closer to Felicity before speaking. "Of course," she says softly. "We wouldn't want you to miss out."

Alyx laughs softly into your ear before pulling back just enough to look Felicity in the eye. "Don't worry," she says with a grin, "I can be as freaky as you want me to." With that, she reaches out and takes Felicity's hand, leading her into the room.

You close the door behind them, not quite able to hide your excitement as you watch Alyx guide your sister onto the bed beside her.