I feel like they don’t argue as much as they should based on their sadistic behaviour in other aspects.
Like literally how do their relationships work. Do they just threaten each other when they need something?
These people in particular are especially vile and manipulative and evil. They are also sadistic and hold grudges like there’s no tomorrow.
How tf do they get along with EACH OTHER?
I don’t know, do they get along at all? What do you mean by “getting along” with each other? Have you got any examples?
Psychos often prefer to do their things alone, although there are some exceptions, some even famous, like the Barbie and Ken killers whose real names escape me right now.
But do these people really “get along”? I don’t think so. When you put someone toxic with a regular person, you get a toxic relationship. And when you put two toxics together, they don’t cancel each other out. They’re still toxic. They’re still fucked up.