The movie "The Invite" is depicting ethical non-monogamy, with some outlets suggesting it provides a realistic portrayal of open relationships. The film's representation of polyamory is being seen as a significant development, with some considering it a step towards greater acceptance of non-traditional relationships. The depiction of ethical non-monogamy in "The Invite" and another movie, "Splitsville", is sparking discussion about the growing visibility of polyamory in media and society.