@shiirakii @kpanda Stephanie said she was dating one of Estelle's personal guards. Estelle has 4, Emiel, Ellen, Roy and I forget the last guys name but he has short black hair. She knows there's something going on between Roy and Ellen so that leaves Emiel and the other guy. I don't remember the exact reasoning but something like she thought the black haired guy was too serious or stoic to be dating so she automatically assumed it was Emiel.
Edit: went back to check, so black haired one is Jin. She thought it couldn't be him because he doesn't seem like the type to take an interest in romantic stuff.