The objectives of this study were: 1. To examine girls' attitudes toward premarital dating and friendship.2. To explore the relationship between cultural grounds of socialization and girls' attitude towards premarital dating and friendship.Using the survey method, a sample of 360 girls from Shiraz University (253 girls), and Shiraz Medical Sciences University (107 girls) with a mean age of 21.9 was selected. The descriptive findings showed that over half of the girls (55.6 percent) had a moderate attitude toward this kind of relationship (girls with negative attitude were 23.5 percent), and girls with positive attitude were 11.9 percent).Inferential analysis indicated, out of independent variables, priorities of material/post-material values, religious beliefs, persistence on religious values, family attitude, friend's attitude, mother and father education, university type and use of some mass media had a significant relationship with girls' attitude. But duration of study in university, and use of magazines and newspapers did not have a significant relationship with the dependent variable.Using a multi-variable regression analysis with the aim of determining the model's soundness was indicative of three variables: persistence on religious values, friend's attitude, and family attitude explained 60.5 percent of dependent variable's variance. Although in the area of the opposite sex interpersonal relationship, the trend changes is moving toward positive attitude and modem values, but girls, at present, are amazed at an area between the traditional and modem values.