In general, "homoerotic toxic relationships" are divided into three types (maybe more, but these are the ones I know) and I will talk about them with examples
So, the first type is "reciprocity". The characters here traumatize each other equally, are soulmates, and mostly hate each other. Representatives of this type mostly have the same appearance characteristics as each other. And the "wife" in such a couple is the masculine one. This type has levels, from books "Dissolution" to "Vicious" (the most exemplary representative of this type) (between them you can still put "The Binding" and also "These Violent Delights" (and "If We Were Villains," maybe))
The second type is "mlm/wlw" (man leaves man/woman leaves woman). In this type, only one of the characters traumatize the other. Mostly because of a breakup (or cheating) caused either by death or circumstances that prevent the characters from being together. The one who is left usually plays the role of the "widow" (depressed and wanting her/his man/woman back). As examples, I can give the books "The World and all that it holds", "Swimming in the dark" and "The Girls"
The third type, "the highest degree", differs from the concept of the second type in that one of the partners inflicts the highest degree of trauma on the other partner - death. The hero doomed to death does not necessarily have to have done something bad to his/her partner. "Wife" in this type are female characters who are murderers. Examples of movies: "The Portrait of Dorian Gray" (also book) and "The Talented Mr. Ripley" (movie only)
I don't know why you need to know this, but I just had to say it
