Alice is dating or married to Bob. Alice finds out that Bob is sleeping with Carol. Alice then kills Bob for cheating on her. This may be presented as a justified act, even if it is a serious crime. He done her wrong. While the same scenario is a common dramatic plot with both genders, modern depictions are often more sympathetic to Alice shooting Bob-the-cheater than Bob shooting Alice-the-cheater. See also Woman Scorned, If I Can't Have You, Yandere, and Murder the Hypotenuse.