Nobody forgets their first love, so it's probably safe to assume that Harry Potter will never forget Cho Chang, whom he enjoys a romantic relationship with that begins in "Harry Potter and the Prisoner of Azkaban". As a couple they sadly weren't to last long, and Katie Leung's career nearly faded away just as quickly.
Leung was exposed to the darker side of life as a celebrity almost as soon as she was cast, including suffering racist abuse online, and the creation of an "I Hate Katie" website. She almost gave up acting completely when the film series ended, and considered pursuing her passion for photography full time, but she eventually decided to continue, and is a regular of both stage and screen. As you might expect of a photographer, her Instagram account is a great one to follow, containing almost as much artwork as pictures of herself.