One must - read is 'Pride and Prejudice' by Jane Austen. It's a classic that set the standard for Regency romances. The relationship between Elizabeth Bennet and Mr. Darcy is filled with misunderstandings, pride, and prejudice, which makes for a very engaging read. Another great one is 'Sense and Sensibility'. It delves into the different natures of its two main female characters and their respective love stories during the Regency era. And 'Persuasion' also stands out. It has a more mature and bittersweet love story that many find captivating.