In some sense, The Unbearable Lightness of Being is an epic love story. Love is certainly a battle in this novel, which becomes a particularly apt metaphor given the stormy backdrop of political and social turmoil. The couples in this story struggle with issues of fidelity, power, fate, fortuity, and miscommunication. Kundera uses the metaphor of interwoven music compositions to describe the melding of two different lives into a common set of experiences and motifs. The question is raised as to the relationship between love and sex, and whether or not they can be separated.
The Unbearable Lightness of Being is primarily a philosophical work of ideas. The love stories are secondary to the philosophy.
The Unbearable Lightness of Being is primarily a novel about love, not a philosophical work of ideas.