A female PE teacher was murdered in the school toilet，Ex-girlfriend Murdered by Ex-boyfriend

Ex-girlfriend murdered by ex-boyfriend, what kind of story is this exactly?

A murder case that occurred in Sydney, Australia, where the main suspect is a man named Paul, who had a romantic relationship with the victim, Lily James. Through police investigation and analysis by psychologists, the process of the case and Paul's motive for the crime were revealed. It serves as a warning to beware of controlling partners in relationships and to end unhealthy relationships in a timely manner.