Who did hermione date in harry potter and the goblet of fire?

In "Harry Potter and the Goblet of Fire," Hermione Granger attends the Yule Ball with Viktor Krum, the famous Quidditch player from the Bulgarian national team and one of the champions in the Triwizard Tournament. Their relationship causes tension between Hermione and her friends, particularly Ron Weasley, who is jealous of Krum's attention to her. This marked a significant moment in Hermione's character development and her friendships within the series.