The aim of this study was to explore the predictive value of emotional intelligence, attachment styles, and sociodemographic variables in predicting conflict resolution strategies in romantic relationships, and to determine whether there are differences in the frequency of specific conflict triggers based on gender and cohabitation status. The online survey involved 679 participants, aged 18 to 30, all currently in romantic relationships lasting longer than six months. Participants completed the Communication Patterns Questionnaire, Emotional Competence Inventory, and Brennan's Inventory of Close Relationship Experiences modification, as well as a questionnaire on sociodemographic characteristics and relationship features. The results showed that attachment dimensions and emotional competence were significant predictors for all communication patterns in conflicts, with attachment dimensions explaining the highest percentage of variance. Insecurely attached individuals were more likely to use destructive communication patterns, while emotionally intelligent individuals were more likely to resolve conflicts constructively. Differences in the frequency of different conflict triggers were also observed. Couples living together significantly more often cited household chores, finances, parenting, screen time, and pet care as triggers for conflicts compared to individuals who did not cohabit. On the other hand, couples who did not live together more often cited lack of or poor communication quality, expartners, and relationships with friends as conflict triggers. Men significantly more often than women cite almost all causes of conflict, except for communication.