Neither was to blame for the way they felt, because Marius was someone who embraces sorry and dwells in it, but Cosette felt it deeply but recovered.
Marius and Cosette experience complex emotions, each shaped by their individual perspectives. Marius is portrayed as someone who becomes enveloped in sorrow, fully embracing it. This tendency influences how he views his feelings and his situation in life. In contrast, Cosette feels the weight of her emotions intensely, but she demonstrates resilience and the ability to bounce back from her struggles.
This difference in their responses reflects the depth of their characters. While Marius can be consumed by melancholia, Cosette manages to recover and move forward, highlighting her strength and optimism. Their experiences illustrate how personal circumstances and emotional reactions can vary greatly between individuals.