One of the main keys that drive the readers to be hooked to a romance story is the spark that they will see and feel within the character of the story, which is true because, without a concrete foundation of each character especially in choosing their unique personality, the story will be useless and boring and the characters will never be closed to the reader's heart.

1. Personality reflecting the names of famous characters. - This is the easiest way in choosing a personality of the character in a Romance Story through reflecting the personality through names of famous characters, like for instance David a famous character in the Bible which possesses qualities to be responsible, leader, brave and soft-hearted or kind- a psalmist. So when the said character's name is introduced to the reader, the reader will get a good impression instantly because the name David is a famous character that already possesses those good qualities. So David needs a girl/lady who have a submissive personality not a "bossy" because I'm sure in reality they will never be compatible.

You can invent the personality of your character in your romance story, but be sure, their personalities can be distinguished from other personality. The personality of this kind are mostly those muses that every author have, and this will make unique on them because every author has its own unique taste.
example of this is Harry Potter, superheroes like Superman, and others.