Objective: The aim of the present study was to investigate the causes, contexts and consequences of the tendency towards white marriage with a sociological approach in the city of Shiraz. Method: The present qualitative research method was based on the grounded theory method. The research population included all young people in Shiraz (men and women) who were in this relationship and had chosen this lifestyle as roommates. Based on snowball sampling and using the data saturation technique, 19 people were selected. Data collection was carried out using a semi-structured in-depth interview method and data analysis was carried out using the grounded theory method. Findings: The results showed that 67 codes were identified out of 383 concepts, of which the initial 67 codes were obtained in the form of 9 categories including economic status of individuals, reducing the exorbitant costs of permanent marriage, individual worldview, family rejection, modernity, facilitating relationships between girls and boys, transformation of traditional values into universal values, being single, distrustful, and irresponsible. Conclusion: Young people are considered as human capital of society, and given the rapid changes and developments in society, the need to research and understand their situation is of great importance.