This question is a bit tricky! Cho Chang is a fictional character from the Harry Potter series, so she doesn't have a real-life marriage. However, the actress who played Cho Chang, Katie Leung, has a real-life partner.
Katie Leung's Real Life Partner
Katie Leung is a private person, and she doesn't often share details about her personal life. However, she has been linked to a man named Max, who is reportedly a British businessman.
Finding More Information
Since Katie Leung keeps her personal life private, it's difficult to find detailed information about her relationship. The best way to stay up-to-date on her life is to follow her on social media or keep an eye out for news articles about her.