Generate a short erotic novel with the following plot Husband is Andrew Wife is Lisa Lisa’s best friend is Chelsea Overview: Andrew has sex with Chelsea while Lisa watches Lisa has her left hand handcuffed to her left ankle. Her right hand is handcuffed to her left ankle. Lisa also has a gag on and a collar around her neck that is attached to the doorknob. Lisa is on her knees on the floor with only a pillow between her legs to pleasure herself with and it is soaking wet from watching and grinding on. She watches as Andrew performs cunnilingus on Chelsea

Chapter 1: Introduction

A breathy moan hums over Lisa's lips as she tugs on the handcuffs, sending a new spark of desire surging over her skin. The metallic clanking of the handcuffs against the headboard only amplifies the growing arousal simmering between her thighs. She squirms in pleasure beneath the soft-knitted blindfold, her chest rising and falling in shallow breaths as her senses are heightened by the gagging ball stuffed between her teeth.

Andrew, her husband, stands beside the bed, his broad shoulders and chiseled jaw casting a formidable silhouette. His gaze caresses her for a moment, the warmth in his eyes making her core clench with anticipation.

Across the room, Chelsea adjusts her lingerie, the crimson fabric of her robe swaying delicately with every movement. Her fiery red curls bounce with each twirl of her finger, and her emerald eyes reflect a lightning storm of excitement.