- Romeo and Juliet: In Shakespeare's famous play, Romeo and Juliet exchange passionate love letters, expressing their deep affection and longing for each other.
- Cyrano de Bergerac: In Edmond Rostand's play, Cyrano helps his friend, Christian, win the heart of Roxane by writing beautiful love letters on his behalf.
- Jane Eyre: In Charlotte Brontë's novel, Jane Eyre confesses her love for Mr. Rochester in a passionate letter, revealing her true feelings for him.
- The Great Gatsby: In F. Scott Fitzgerald's novel, Jay Gatsby writes a heartfelt letter to Daisy Buchanan expressing his love for her and detailing his dreams and aspirations for their future together.
- Pride and Prejudice: In Jane Austen's novel, Mr. Darcy writes a letter to Elizabeth Bennet explaining his actions and feelings, which ultimately leads to their reconciliation and romantic union.
- Love Letters of Abelard and Heloise: Abelard and Heloise, a real-life couple from the 12th century, exchanged passionate and eloquent letters that have become recognized as some of the most famous love letters in history.