Titles that open with E
E is a smaller shelf: "The Ex…", "Empire", "Eternal". Ex-spouse plots only work if the first marriage had a reason to fail. Eternal-love language is usually a promise the middle of the book has to earn. Prefer titles that name a place or a job over titles that name an emotion.
If you are hunting for enemies-to-lovers, E is not automatically the right drawer. That trope hides under every letter. Use category pages when the engine matters more than the alphabet.
This is a title index, not a ranked list. Reading guides and categories are better when you want a story type instead of a letter.