Overview
Addicted to Love is a 1997 American romantic black comedy film directed by Griffin Dunne and starring Meg Ryan, Matthew Broderick, Tchéky Karyo, and Kelly Preston. Its title is based on Robert Palmer's song "Addicted to Love", a cover of which by Neneh Cherry is featured in the film.
Plot
The story begins in a small town, where Sam works as an astronomer and enjoys an idyllic life with his childhood sweetheart Linda, who is a schoolteacher. She wants more experiences than can be offered in their small town, so goes to New York City for a two-month teaching fellowship.
Instead of returning home, Linda sends Sam a Dear John letter announcing that she is staying in New York. He leaves almost immediately for the city, convinced he can get her back.
Sam quickly discovers Linda's living with a new lover, French restaurant owner Anton. Sam breaks into an abandoned building across from Anton's residence, and converts his astronomy equipment to surveillance equipment. He sets up house (and a camera obscura), watching her interactions with Anton in the hopes of finding out more information about them, as well as predicting when they will break up.
From Wikipedia (CC BY-SA 4.0).