Film Inspiration.

Obsessed, is a film which is based on a flirtatious affair turning extremely pyscho. One character becomes obsessed with the man she fancies, and won't leave him alone, always getting jealous of him and his wife, and later on in the film tries to hurt his wife. This can be mirrored in how Alfie is so jealous and obsessed with Marie and how he causes physical revenge to express his anger and emotions.