Childhood maltreatment is a key precursor to vulnerable narcissism since it likely lead to a narcissistic injury that triggers defenses against rage and abandonment. In later life, this pattern may contribute to a maladaptive model of love relationships. The present study explored the association between different types of childhood maltreatment (i.e., emotional, physical, and sexual abuse; physical and emotional neglect) and love addiction via vulnerable narcissism in a community sample of 505 cisgender emerging adults (M = 24.90, SD = 2.67; 76.6% assigned female at birth (AFAB); 68.5% heterosexual) residing in Italy. Data collection relied on self-report questionnaires administered online through the Qualtrics platform, and study hypotheses were tested using structural equation modeling. The results showed that childhood emotional abuse and emotional neglect directly influenced love addiction, while physical and sexual abuse, as well as physical neglect, showed no significant effects. Greater childhood emotional abuse and neglect were associated with increased vulnerable narcissism, leading to higher levels of love addiction. Gender differences emerged, with the indirect effect of vulnerable narcissism on the relationship between emotional neglect and love addiction significant only for AFAB. The findings emphasize the risk of love addiction in emerging adults with a history of childhood emotional abuse and neglect, highlighting the importance of addressing childhood emotional maltreatment and vulnerable narcissistic personality traits in interventions to treat this condition.