Obsessed(1992)

Lorie Brindel works at an insurance company and falls in love with one of her clients, the much older Ed Bledsoe. Spending weeks of passion together, Lorie is convinced that Ed is the man of her life and that he would marry her. When Ed decides to break up the relationship, Lorie does not accept it and tries to win him back, falling from her extreme love into an equally extreme hatred.