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 2: Setting the Scene
The air is thick with the heady scent of lust and excitement as Andrew works his skilled tongue on his friend Chelsea, who whimpers in delicious agony beneath him. Her emerald eyes roll back with ecstasy,her frame trembling as her body seeks to release the pent-up passion building within her.
Lisa, bound and gagged, gazes at the scene with a mixture of envy and desire. Her heart races with pleasure, the blood coursing through her veins as she watches her husband explore another woman's body.