Asking to chatGPT: What cinema or literature depicts a story that the protagonist's best friend becomes their final and most fierce rival (enemy) in the ending. Give me at least 10 examples.

与我最近阅读的一本书的作者游玩了一会野外公园，回到他家顺手撸了播客。

红楼梦的好处自不必说，也轮不到我说。