If we assume a typical love story, Duncan is surely one of the main characters. There might be a female lead, let's call her, for example, Lily. She could be the object of Duncan's affection. And perhaps there's an antagonist, like another guy who also likes Lily and tries to create problems for Duncan in his pursuit of love.
As I don't know the exact 'duncan love story', it could be Duncan himself and the person he falls in love with. Maybe there's also a best friend who gives Duncan advice on his love life.
The main characters are obviously Courtney and Duncan. Courtney is often portrayed as a strong - willed and ambitious character, while Duncan is more of a rebel. In the context of the pregnant fanfiction, their personalities play a big role in how they react to the pregnancy.
In stories like this, there may be a mentor - like figure who taught the main character the value of his word in the first place. Or there could be a group of people that the man of his word is trying to protect. Without reading the actual story, we can only speculate, but these are common types of characters in such tales.
Well, without more context, it could be anyone. It might be a young couple from different social classes, like Romeo and Juliet.
I don't know who the main characters are in '1940 a love story' without more information.
Since I don't know the specific '1980 love story', I can't say for sure who the main characters are. They could be two young people, perhaps a boy and a girl.
I don't know as the name '36 love story' doesn't give any clue about the main characters.
I'm not sure without more information about this love story. It could be a man and a woman, or it might have more diverse characters like two men or two women in a modern love story.
Since I don't know the specific '1969 Love Story', I can't say for sure who the main characters are. But they could be two young people, perhaps a man named Jack and a woman named Rose, just as an example.
Since we don't have much information, it could be anyone. It might be a soldier and a nurse, which was a common scenario in 1947 after the war.
I don't know who the main characters are as the information about the '1946 love story' is limited. It could be two ordinary people named something common like John and Mary.