The 'love - hate relationship' is a very common trope. They constantly bicker and seem to dislike each other, but there's an underlying attraction. And then there's the 'protective bully' trope. Even though they were mean before, when someone else tries to harm the victim, the bully becomes protective, which is a sign of the changing relationship.
Sister Lover was a Japanese manga about the love story between the protagonist and his half-sister. The ending of the manga had not been decided yet because the storyline had not yet ended. Some readers and the media speculated that the manga might usher in a happy ending where the protagonist and his half-sister could find their own happiness. However, these speculations were just speculations. The details of the ending of the manga would only be known after the work was completed.
Well, there's 'Paper Towns' which can be seen in a way as having elements of 'bully to lover'. The male character at first seems to be a bit of a bully to the female lead, but as the story progresses, they develop a deep connection. Also, keep an eye on fanfic websites like Archive of Our Own. There are numerous 'bully to lover' fanfics that you can explore based on different fandoms.