This research investigates the antecedents of students' loyalty in retail banking services, through the four phases approach suggested by Oliver (1999). The analysis of 60 semi-directive interviews confirms the importance of satisfaction, confidence and affective commitment in the development of customer loyalty. The results show that a large part of students have achieved an advanced stage in the loyalty process. This youth segment is waiting for interpersonal relationships with banking advisors. The formers play a key-role in the development of confidence and affective commitment, which are convenient factors to engage in commercial transactions.