yes please, she was a year ahead of him in school and he was also a transfiguration darling so maybe they were each other's first like "serious" (if you can ever call any romance between 17-year-olds "serious") relationship? maybe her 6th and 7th year they dated if you're down for that? they're the same age (he's a '90 gemini but don't ask his bday, neither of us know) so it wouldn't have been weird at any point. and he loves shiny things and tends to steal them when he's in magpie form, so maybe they're, oh, idk, starting a little side hustle with that? he's starting to explore selling some of the shit he steals through lacquer although mostly he just likes to nick stuff to wear it so he can gesticulate wildly with rings on every finger