This was a light read. You have your dissolute reprobate who is not really dissolute or quite the reprobate. The heiress who is not quite the heiress. The fiancée who is on again off again and a dastardly aunt looking to get her hands on her niece's fortune.
The beginning of the novel starts with mistaken identity then descends into misunderstanding and lots of twists and turns. If you don't take this book too seriously, it's actually a lot of fun.