Well, in 'The Improbability of Love: A Novel', I think a major theme is the unpredictability of love. It shows how love can pop up in unexpected places and with unexpected people. Additionally, it might deal with the theme of social class differences. Since love doesn't really care about class boundaries, the novel may explore how different classes interact when love is involved. And there could be a theme of emotional growth. As the characters experience love, they may grow and change in their emotional understanding.
One of the main themes could be love itself, exploring its various forms and the improbability of it in certain situations. Another might be human relationships, as love is often intertwined with how people interact with one another. Also, it could touch on the idea of self - discovery, as characters may find themselves through their experiences related to love.
The main themes in 'The Improbability of Love: A Novel' are likely to include love, of course. But not just romantic love. It could be about platonic love or love within families as well. Another theme could be the passage of time and how it affects love. Over time, love can change, fade, or grow stronger. And also, the theme of personal transformation might be there. Characters may transform themselves because of their experiences with love, whether it's learning to be more open, more forgiving, or more independent.