It's possible that:
* It's a self-published book: There could be a book with this title published independently.
* It's a fictional title: You might have come across this title in a movie, TV show, or other media.
* It's a working title: Maybe you've heard someone mention a book with that title that is still in development.
If you're interested in finding a book with a similar theme, you could try searching for books about:
* Bridesmaids gone wrong
* Wedding revenge
* Friendship betrayal
Let me know if you have any other details about the book, like the author or genre, and I'll see if I can help you find it.