He tells Mark what happened at the park.

“She told you all this?” Mark asks.

Derek's lips curled into a smug smile, his eyes fixed on Mark as the app's influence continued to take hold. "She did more than just tell me," he replied, his words laced with conspiratorial excitement. "She showed me. She sucked my cock. At the duck pond in the park. Right there in the middle of the park this afternoon."

Mark's gaze became unfocused, his mind clearly racing at the vivid imagery Derek was painting. His grip on the whiskey glass loosened slightly, the amber liquid sloshing dangerously close to the rim. "I... I can't even," he breathed, his voice thick with arousal. "Sue's always been a bit of an exhibitionist, but..."

"She told me all her fantasies, Mark," Derek continued, interrupting the older man as he leaned closer, his voice a low conspiratorial whisper. "All of them. That's why I'm here tonight, Mark." Mark's breath caught in his throat, his body stiffening as Derek's words washed over him. The app's influence was undeniable now, Mark's face flushed and his eyes glazed with lust. He set his whiskey glass down on the coffee table with an unsteady hand, the clink of glass on marble cutting through the charged silence. "All of them?" he repeated, his eyes darting toward the kitchen where the sounds of Sue preparing dinner emanated from.

Derek nodded slowly, savoring the moment as he watched Mark's control slip away. "Every. Single. One." He stepped closer, closing the distance between them until their bodies were almost touching. "She told me how she fantasizes about being shared. About taking multiple men at the same time." Mark's breath came in short, ragged gasps as he processed Derek's words, his body quivering with barely restrained arousal. The app's influence was now fully evident in the way his eyes darted worriedly towards the kitchen, his hands clenching and unclenching at his sides. "Multiple men?" he whispered, his voice low and thoughtful as his eyes shone with lust. "She's always talked about it, but I never thought she'd..."

Derek's lips curled into a predatory smile, his hand sliding his phone out of his pocket, checking the app. "She's not just talked about it, Mark. She's craved it. Ached for it." Derek's finger traced the screen of his phone, the app's commands flashing before his eyes. Finding the one he wanted, he thumbed over Threesome, the app chiming almost instantly signaling success. He watched Mark's face, seeing the struggle between his ingrained inhibitions and the overwhelming pull of the app's influence. Mark's lips parted, his tongue darting out to wet them as he sat there transfixed, his body quivering with need. "Mark," Derek murmured. "Sue wants this. She wants us both."

Mark's breath hitched, his hands clenching into fists at his sides as he fought against the app's influence, his **** to share his wife warring with the desire that was flooding through his body. "I'm not sure I can… do this," Mark finishes, his words trailing off as he stares at Derek, his face contorted with internal struggle. The app's influence is clear in the way his body trembles, his muscles taut and strained as he fights against the desires that are being stirred up inside him. Derek's eyes lock onto his, holding his gaze as he watches the internal battle rage across Mark's face. "You can, Mark," Derek says softly, his words laced with persuasion. "You want to."

Mark's resolve visibly wavers, his shoulders sagging slightly as he exhales a shaky breath. "But what about Sue?" he asks, uncertainty threading through his words. "She's my wife. I love her."

Derek's lips curl into a knowing smile. "Exactly, Mark. You love her. And you know how much she wants this." His words are a soft murmur, coaxing and seductive. "You want to give her everything she desires."

Mark's eyes flutter closed for a moment, his body trembling at Derek's words. When he opens them again, the last remnants of his internal struggle are evident in their glassy, lust-filled depths. "I... I want to make her happy," he admits, his voice thick with arousal and uncertainty.

"Good," Derek nods, glancing towards the kitchen, calling out. "Sue, can you come in here, please?" Sue's footsteps echo from the kitchen, growing louder as she approaches. The atmosphere in the room crackles with tension, Mark's body rigid and Derek's eyes fixed intently on the doorway. When Sue enters, her face lights up with surprise at seeing Derek, a flush creeping across her skin as she surveys the scene before her.