Growth is often a theme too. Just like in real life, the characters in'my friend novel' may change and develop as a result of their friendships. They learn about themselves and the world around them.
Friendship is an obvious one. It shows how characters interact, support, and grow with their friends. For example, in many novels, friends help each other through difficult times.
The main themes in 'My best friend's husband novel' could be complex relationships, self - discovery, and moral dilemmas. Complex relationships are obvious as it involves the relationship between the best friend and the husband. Self - discovery might come into play as the characters might have to figure out who they really are in the face of such a complicated situation. Moral dilemmas are also central, as the characters have to decide what is right and wrong when it comes to their feelings and actions towards their friends and their friends' partners.
One possible theme could be loyalty. If the father's best friend has been around for a long time, loyalty within their friendship and perhaps loyalty to the family as well. For example, if the family faces some difficulties, the friend might show loyalty by helping them out.
Possibly friendship and farewell. Since it has'my friend' and'so long' which can imply leaving or saying goodbye to someone.
One common theme is loyalty. In Italian novels, friends often stick together through thick and thin. For example, in the novel 'The Garden of the Finzi - Continis' by Giorgio Bassani, the friendship between the narrator and Micol Finzi - Contini endures despite the changing social and political situation. The loyalty they show to each other is a key aspect of their relationship.
One possible theme could be forbidden love. Since it involves a relationship with the father of a best friend, it's likely to be a relationship that society might not approve of.
If we assume it's a general 'friend of the family' - type Polish novel, common themes could be loyalty. A friend within a family setting often has to show loyalty to the family members. Another theme might be trust. Since they are close to the family, trust is a crucial element in their relationship.
One of the main themes is wealth and class. The novel shows how money can corrupt and also how different social classes interact. For example, the character of John Harmon's inheritance is a central plot device that reveals the true nature of many characters.
I think the main theme is redemption. The 'darkness' in the novel could represent the past mistakes or sins of the characters. As the story progresses, they might be on a journey to redeem themselves, to find a way out of the 'darkness' that has haunted them. It could be shown through their growth, their attempts to make amends, and their search for a new beginning.
Friendship is also a big theme. It shows how the relationship with the best friend can be tested when there are romantic feelings for her brother. It might also explore themes of loyalty and betrayal in the context of friendship. For example, if the protagonist starts a relationship with the brother without telling the best friend, it can lead to a lot of drama. Another aspect could be self - discovery. The main character may learn a lot about themselves, their desires, and what they are willing to risk in the process of getting involved with the brother.
One possible theme could be the duality of human nature. Dahmer seemed normal on the outside but was a monster inside. Another theme might be the idea of hidden evil, as those around him didn't suspect his true nature for a long time.