Sure. 'The Duke and I' by Julia Quinn is very popular. It's part of the Bridgerton series and has been adapted into a successful TV show. It features the relationship between Daphne Bridgerton and the Duke of Hastings. Also, 'An Offer from a Gentleman' by the same author is quite popular, with its Cinderella - like story set in the regency era.
Well, 'Gone with the Wind' is a classic that has elements of regency - like romance. Scarlett O'Hara's relationships, especially with Rhett Butler, are complex and passionate. Additionally, 'Wuthering Heights' has some regency - era - ish romance, though it's more of a dark and brooding love story between Heathcliff and Catherine.
One of the most popular regency romance novels is 'Pride and Prejudice' by Jane Austen. It tells the story of Elizabeth Bennet and Mr. Darcy, with their complex relationship full of misunderstandings and growing love. Another is 'Sense and Sensibility' which also explores love and relationships in the regency era. And 'Persuasion' is also well - loved, focusing on second - chance love in that period.