Purpose: The main purpose of the present study was to gain a deeper insight into the common psychological consequences and experiences of girls with free marital relationships. Method: The nature of the present issue was "qualitative" in terms of research time, measured in "quantities" research, and in terms of type, "descriptive phenomenology." Participants in the study included 12 girls with free marital relationships in Tehran who were selected by purposeful snowball sampling method. In this study, data collection was done through semi structured Interview (in-depth phenomenological interview). Data analysis was performed according to the Colaizzi approach (seven steps). Then, the main themes were extracted. The research findings were presented in two parts: descriptive and analytical findings. Findings: The results of the research by employing grounded theory and content analysis showed that the common psychological areas led to the formation of free relationships among the girls, consisting of three main categories include psychological, conscious, and non-conscious factors. Their shared psychological experiences consisted of three main categories of emotional, affective, emotional, emotional and emotional experiences. Conclusion: the common psychological consequences of the associations included the three main categories of short-, medium-, and long-term outcomes.