If you are into foreign films, you may want to consider the following–
Therese Raquin (1953)–This black and white French film-noir centers on a dispirited housewife who brazenly begins an affair with a brawny trick driver.
Take My Eyes (2005)–In this Spanish drama, a battered wife flees her violent husband and struggles to start a new life as he desperately tries to win her back.
Story of a Love Affair (1950)–Consumed by the thought that his young wife is cheating on him, Enrico hires a detective to tail her in this quirky Italian thriller about jealousy, passion and betrayal.
All of these are available on Netflix streaming.