One possible theme could be betrayal. If there's pain in the love story, perhaps one of the characters has been betrayed by the other in some way, like cheating or breaking a promise.
Illness and death can be themes in painful love novels. When one of the lovers is ill or facing death, it adds a layer of pain to the relationship. It makes the time they have together seem precious and the thought of losing each other unbearable. This can be seen in novels like 'Love Story' where the female lead is ill and their love is tinged with the pain of her impending death.
The theme of forgiveness might also be present. Since there is love and hate, perhaps the characters need to learn to forgive each other for the things that have caused the 'hate' in order to fully embrace the 'love'. It could be about how love can overcome hate through forgiveness, or how the inability to forgive can destroy a relationship. Also, the theme of redemption could be there. A character who has done something to cause 'hate' might try to redeem themselves in the eyes of the one they love.
One possible theme could be perseverance. If Lisa is facing pain, she might be striving to overcome it, which shows the idea of not giving up in difficult times.
One possible theme is heartbreak. Since it's about an abandoned love, the main character must be experiencing a great deal of pain and loss.
Love is likely a major theme. Given the title, it might be about an all - encompassing, never - ending love.
Love and loss could be a theme. Often in love novels, the characters experience the joy of falling in love and then the pain of losing that love in some way.
One possible theme could be the beauty of nature. Since it's set in a bayou, the novel might focus on the unique and often overlooked beauty of swampy areas.
It might also deal with sacrifice. Maybe one character has to sacrifice something, perhaps their own life or dreams, for the sake of their love. This would tie in with the 'die' part of the title. And of course, the power of love itself is probably a key theme, exploring how love can endure even in the face of death or great difficulties.
A key theme is the idea of sacrifice. Characters in blind yet painful love novels often sacrifice a great deal for their love. They might sacrifice their reputation, as Anna Karenina does, or their future, like Gatsby. Another theme is the loss of self - identity. When characters are so blindly in love, they sometimes lose sight of who they are as individuals. This is seen in 'Jane Eyre' where Jane almost loses herself in her love for Rochester before she regains her self - respect and identity.
It could also be about the power struggle between love and hatred. Which emotion is stronger? Does love always conquer hatred or vice - versa? The novel might be set up to show the battle between these two emotions within a character or between characters. For instance, a character might be trying to overcome their hatred for someone because of their love for another. Or perhaps love turns into hatred because of a power imbalance in a relationship, and the novel delves into how that shift occurs and what it means for the characters involved.