Cho Chang
Fred Weasley took Angelina Johnston, but it is unknown who George Weasley took.
Cedric Diggory and Cho Chang dance together in the fourth movie, Harry Potter and the Goblet of Fire. They attend the Yule Ball together.
He fancied Cho Chang, a pretty Asian girl from Ravenclaw, who ends up going to the Yule Ball with Cedric Diggory, one of the competitors from the Triwizard Tournament.
Yes, he goes to the Yule Ball with her. He also shows a sign of love for her in the 3rd book.
Yes he went with Parvati to the Yule Ball.
Neville longbottoms date to the Yule Ball was Ginny Weasley
Cho Chang, but she turned him down, as she was already going with Cedric Diggory. He then asked Parvati Patil, who he ended up going with.
No, they are only best friends. Harry fancies Cho Chang and asks her to the Yule Ball with her declining him due to Cedric Diggory asking her beforehand. It can be suggested though that Hermione might have had a slight crush on Ron depending on how you judge the way she reacts when Ron confronts her about going to the Yule Ball with Viktor Krum.
Harry Potter went with fellow Gryffindor student Parvati Patil to the Yule Ball in 1994 (during the time of Harry Potter and the Goblet of Fire. However, Harry didn't want to go with Parvati; he wanted to go to the Yule Ball with his crush, Cho Chang, but she was going with Cedric Diggory.
Harry Potter had a crush on Cho Chang, a Ravenclaw student in the year above. He asked her to the Yule Ball, but she was already going with Cedric Diggory.
Preparing for the Yule Ball - 2006 V is rated/received certificates of: UK:U
It's not mentioned in the book or the film. Fred took Angelina Johnson, although George married her in the epilogue.