This study aimed to accumulate evidence of the additional verification of a model that shows the relationship between attachment anxiety and physical aggression and those related variables adopted in the study by Xie et al. (2022) in married couples. A romantic conflict scenario was presented to married survey respondents. The respondents’ jealousy and coping behaviors were measured. Although structural equation modeling did not reproduce the factor structure of coping behaviors with conflict, it provided evidence for the model’s external validity. These results suggest the need to clarify the causal relationship between physical aggression and high levels of attachment anxiety.