One possible theme could be the power of shared interests. Since they both are involved with musical collectibles, it shows how a common passion can bring two people together. Another theme might be discovery. They could be constantly discovering new things about the collectibles and about each other.
Since I don't have the details of 'Brinn's Musical Collectibles Love Story', I can only speculate. It could be that Brinn has a collection that is not just a hobby but a part of their life. Then, a new person comes into Brinn's life. This person might be initially attracted to Brinn because of the interesting musical collectibles. As they get to know each other better, they find out they have a deeper connection. Their relationship blossoms, and the musical collectibles are always there in the background, adding a special charm to their love story. For example, they might have their first date in Brinn's music - filled collection room, surrounded by all those precious items that have a story of their own.
One possible theme could be friendship. Since it's about girls, their relationships and how they support each other through the musical journey might be a central theme.
Another theme could be the conflict between two different worlds. The thug's world of crime and danger and the world of his lover which might be more normal and peaceful. This conflict can create a lot of drama and tension in the story.
One possible theme is sacrifice. The soldier may have to sacrifice his time with his loved one for his duty. Another theme could be loyalty, both to his country and to his partner.
A third theme might be the pursuit of dreams. If one or both of the lovers had big dreams, like traveling the world or becoming an artist, their love would be intertwined with their individual pursuits. They might have to choose between love and their dreams or find a way to make both work in the context of their relationship.
One possible theme could be sacrifice. In 1941, during the war, lovers might have to sacrifice their time together, or one might sacrifice their safety for the other. Another theme could be hope. Despite the dark times of war, their love could be a source of hope for a better future.
One possible theme could be nostalgia. Since it's related to 1989, it might evoke a sense of longing for the past, especially for the time when the love story took place.
In a 2023 love story, the theme of second chances might be present. Maybe someone had a bad breakup in the past and in 2023, they meet someone new who gives them a chance to love again. Technology can also be a theme. People might have met through a dating app in 2023 and their relationship developed from there. And of course, the theme of family could be there. A couple in 2023 might be building a relationship with an eye towards starting a family in the future, so they are learning to support and care for each other like a family unit.
One possible theme could be social change. In 1950, society was evolving, and a love story might have been influenced by new social norms. Another theme could be sacrifice. The lovers may have had to sacrifice personal desires for each other or for their families.
Another theme could be hope. People in 1948 were looking forward to a better future after the destruction of the war. So the love between two people could represent the hope for a new start, both in their personal lives and in the broader context of the world around them. It could also be about the theme of change. 1948 was a year of significant change, and the love story could revolve around how the characters adapt to the new social, political and economic changes while falling in love.