The doorbell rang, and Sarah's heart skipped a beat. She glanced at the clock—7:30 PM. Perfect. She took a deep breath, smoothing her dress over her hips before walking to the door. The anticipation was electric, sending shivers down her spine.

"Who is it?" she called out, her voice steady but tinged with curiosity.

"It's me," came the muffled reply from behind the door. "Open up."

She hesitated for a moment, her fingers brushing against the cool metal of the doorknob. Then, with a determined twist, she pulled the door open. There stood Mark, her husband's best friend, his eyes dark and hungry. He stepped inside without waiting for an invitation, his presence filling the room like a storm cloud.

"You look amazing," he murmured, his gaze raking over her body.

Sarah blushed, feeling the heat rise in her cheeks. "Thanks. You don't look so bad yourself."

Mark smirked, closing the door behind him. "I wasn't sure you'd go through with this."

"Neither was I," she admitted, her voice barely above a whisper. "But here we are."

They stood there for a moment, the tension between them palpable. Then, without warning, Mark closed the distance between them, his hands cupping her face as he kissed her deeply. Sarah gasped, her body responding instantly to his touch. His tongue probed her mouth, exploring every inch with a hunger that left her breathless.

"God, Sarah," he groaned, pulling back slightly. "You taste even better than I imagined."

She smiled, her hands slipping around his waist. "Is that so?"

"Oh, yeah," he replied, his voice thick with desire. "Now, let's get to the main event."

He led her by the hand to the living room, where a small table had been set up. On it lay a variety of sex toys, each one more exotic than the last. Sarah's eyes widened as she took in the sight.

"Where did you get all this?" she asked, her voice trembling slightly.

"Does it matter?" Mark replied, his tone playful. "Just know that tonight, we're going to explore every single one of them."

Sarah swallowed hard, her throat dry. "And what about David? What if he finds out?"

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