Everyone is discussing potential “Charles thinking he’s dating Edwin while Edwin thinks they’re just friends” concepts, and I can’t believe I haven’t seen anyone mention that in England it’s pretty common for people to use “love” and “babes” platonically
Edwin has heard countless people refer to complete strangers as love, and even call their close friends babes, so when Charles starts calling him affectionate terms he just assumes it’s modern slang and not a romantic thing
Meanwhile Charles doesn’t even realise calling Edwin babe could be read as platonic because it’s usually women who call each other that, and he went to an all boys school so the only women he knew well were girlfriends or family members