Gone Girl Title Sequence

In the movie, Nick's careless attitude and affair were the trigger for the downward spiral in their relationship from Amy's perspective. Despite holding on to her feelings throughout their relationship, it slowly became more corrupted with blood and hatred. As a result, the couple found themselves stuck in a marriage of anguish and frustration. The blood breaking the ice symbolizes the moment of breaking the ice and triggering point to the downward spiral of their relationship.