What are the common themes in'my previous lover novel'?

Love and romance are likely to be common themes. Since it has 'lover' in the title, it might involve the development of a relationship between two characters.

Love and acceptance are very common. Since same - sex relationships often face more challenges in society, these fanfics usually focus on how the two boys find acceptance from their families, friends, or society at large.

Love at first sight is a common theme. In many such novels, the two main characters meet and there is an instant spark, like in some Mills & Boon novels where the hero and heroine are drawn to each other immediately.

Love against all odds is also a theme. In these novels, the secret lovers usually face many difficulties, but their love is so strong that they keep fighting for it. For example, in many historical 'secret lover novels', the lovers might be from different social classes, and society would not approve of their relationship, yet they still pursue their love.

One common theme is obsession. The characters are often obsessed with their lovers, to an extreme and sometimes dangerous degree. For example, they might stalk or control their partners.

Love is surely a main theme. It likely explores the different aspects of love between two people who are in a relationship that could lead to marriage.

Love and loss are likely main themes. The title itself 'Goodbye My Lover' implies that there is a parting in a love relationship, which is a common aspect of stories dealing with love and loss.

Love and acceptance. The idea of a human or another being loving a black dragon goes against common prejudices in the fictional worlds, so acceptance is a big theme.

The theme of sacrifice often appears. One or both of the lovers may have to sacrifice something significant for the sake of their relationship. It could be their own identity, their place in society, or even their life. In some stories, the 'dark' lover may have to sacrifice their dark nature to be with the one they love, or the human lover may have to sacrifice their normal life to be with the supernatural partner. This theme of sacrifice deepens the emotional impact of the story.

Love against all odds. Since it's a secret relationship, there are always many obstacles like family expectations, social status differences, and business rules. For example, in many novels, the CEO's family might have arranged a marriage for him with another business partner's daughter, but he falls in love with someone else secretly.