They barely know each other but in the final book Cho offers to take Harry to the Ravenclaw common room and Ginny pointedly says that Luna will do it because she doesn't like Cho's intentions.
He married Ginny and had children with her.
Ginny Weasley.
The fanfiction you are referring to is likely "Jealousy (A Cho Chang Story)" by Frozenlight22. In this story, Cho struggles with her jealousy towards Ginny after Cedric chooses her as his treasure for the Triwizard Tournament task. This jealousy complicates Cho's feelings for Cedric and leads to a confrontation between the characters.
Ginny Weasley and in their fifth year Cho Chang.
Cho Chang and Ginny Weasley.
Ginny Weasley, Cho Chang (only once did they kiss)
Over the series, various girls have a crush on him: Cho Chang, Romilda Vane and Ginny Weasly. Harry Potter 1-3: Ginny Weasley has a crush on Harry. Harry Potter 4: Maybe Cho Chang - but Cho Chang was dating Cedric Diggory who died... Harry Potter 5: Cho Chang has a crush on Harry and they later start dating. Harry Potter 6: Romilda Vane and her friends are obsessed with Harry and tries to slip him a love potion which he doesn't use but Ron does. Then in the middle of the movie and close to the end of the book Harry and Ginny kiss and become girlfriend/boyfriend. Harry Potter 7: Ginny still loves Harry but they are apart and don't see each other for most of the book In the end, Harry marries Ginny Weasley.
In the movies I think Hermione likes Harry then Cho Chang then Ginny.
Ginny Weasley. Cho Chang and Romilda Vane used to like him.
No, he likes Cho and then Ginny but never Luna
First, he likes Cho Chang, then he likes Ginny Weasley(Ron's little sister), but he ends up marrying Ginny.
Ginny Weasley and Cho Chang are not places, so I'm guessing your asking who are Ginny and Cho. Ginny Weasley is Ron Weasley's younger sister. She is the youngest Weasley and the only girl. In the epilog of the last book/movie, she marries Harry Potter. Cho Chang first appears in the fourth movie, Harry Potter and the Goblet of Fire. She is Harry's first love interest, but is dating Cedric Diggory through out the movie/book. When Cedric is killed at the end of the fourth movie/book, Harry briefly dates her. After the fifth book/movie, she is no longer an important part of the series.