City of Mostar twenty-six years after suffering two devastating wars in just a few years became ethnically divided among the inhabitants, but also institutionally at the level of city authorities between Bosniaks and Croats. One of the assumptions is that division and rivalry are replicated due to the new structure of post-war society in Bosnia and Herzegovina, where divisions are perpetuated at the institutional level, thus deepening the gap between the once warring parties. Research to date has shown that residents are not yet ready for close relationships with people on the "other side" and that they rarely go to the other side of the city, showing that trauma is inherited by the next generation. The primary aim of the research in this paper is the perception of the student population regarding the division of the city of Mostar, and further research questions were whether there is a difference between students who are often in contact with people of other nationalities in ethnic antagonism and whether there are differences between students in ethnic antagonism. Data was collected through an online survey during the summer and autumn of 2020 on a sample of 234 students at the University of Mostar. The results showed that most respondents perceive Mostar as a divided city, with those respondents who had more friends of other nationalities and more often crossed the imaginary border had different attitudes than respondents who rarely crossed to the "other side" and had fewer friends of the other nationality. Surprisingly so, the attitudes about entering into a relationship with a member of another nationality showed a very high percentage of respondents reject this type of relationship no matter how many friends of another nationality they had or how often they went to the "other side", clearly showing that we are far from the desired level of multiethnic solidarity.