In the "Harry Potter" book series written by J.K. Rowling, the relationship between Harry Potter and Cho Chang, a fellow Hogwarts student, goes through several ups and downs. Cho is introduced as a member of the Ravenclaw house and becomes Harry's love interest during his fifth year at Hogwarts.
Cho and Harry's first date is portrayed in "Harry Potter and the Order of the Phoenix." However, their relationship faces challenges, one of which is the emotional burden Cho carries due to the recent death of her former boyfriend, Cedric Diggory, during the Triwizard Tournament (events from the previous book, "Harry Potter and the Goblet of Fire").
In the book, it is evident that Cho is still mourning Cedric's death and finds it challenging to move on. During a meeting with Harry, she bursts into tears while trying to discuss Cedric, and this adds to the emotional strain in their relationship.
After this incident, Harry realizes that Cho is not emotionally ready for a new relationship, and her heart is still attached to Cedric. Recognizing this, he doesn't ask her out again or pursue the relationship further out of respect for her feelings and the knowledge that it would not be fair to either of them. He understands that she needs time and space to heal and come to terms with her emotions.
Ultimately, Harry and Cho's relationship doesn't progress beyond friendship, and Cho eventually starts dating Michael Corner, another Hogwarts student. Harry's decision not to pursue Cho further reflects his maturity and empathy, understanding that sometimes people need time to heal before moving on to new relationships.