Rent Love Object (2003)

The bizarre tale of Kenneth, a socially insecure technical writer who forms an obsessive relationship with "Nikki", an anatomically accurate silicone sex doll, which he ordered from the Internet. Due to his experiences with his new toy, Kenneth's life takes a turn for the better when his newly found romantic skills attract the attention of Lisa, a girl in his office. But when the doll's jealous personality invades his consciousness, Kenneth becomes trapped in a perverse triangle, torn between the dominating silicone Nikki and the beautiful flesh and blood Lisa.