Hermione is rather nettled by this, and says that nobody else is acting that silly about her, but Harry notices that many other students seem similarly struck by her.Viktor Krum, who arrived with the Durmstrang delegation, and has been chosen as their Champion in the Tournament, seems to appear in the library whenever Hermione is there.Towards year's end, Hermione is attacked and petrified by the Monster that has been released from the Chamber of Secrets.When we see her in the Hospital Wing, Ron seems more deeply affected than Harry.
After Hallowe'en, however, she becomes friends with Harry and Ron, and later takes part in protecting the Philosopher's Stone, helping Harry to bypass the many obstacles leading to where it is being guarded.
When Hermione suggests to Professor Mc Gonagall, at Christmas, that Harry's new broom might be jinxed, this causes an estrangement between Hermione and the other two.
During this time, Hermione is working to try and secure a reprieve for Buckbeak, a job that Harry and Ron promised to help with, but have somehow forgotten.
It seems that Viktor Krum is attracted to her when he arrives for the Triwizard Tournament in Harry Potter and the Goblet of Fire, but she does not reciprocate his feelings; she sees him as a pen-friend, though it is obvious to us that he wants more than that.
When Ron's relationship with Lavender ends, he suddenly discovers his true feelings for Hermione, feelings which Hermione has quietly had for him for the past three years or more; and by the end of the sixth book, they have become more than "sort of" together, according to Harry.
The two of them do reconcile when they have to start work on Buckbeak's final appeal, but they remain at least outwardly friends, rather than anything more serious.