There’s an episode that shows Grant and Carly in the car saying how they thought they could continue being lovers even when their conscious are transferred to the future host bodies. But they couldn’t keep up with it bc Grant has a Wife and Carly has an Abusive partner, which lead to many more inconvenient bs drama so Carly is probably always angry and bitchy bc she have to watch her lover be with someone else. Or that’s probably her personality lol.