In this work, the authors analyze and reflect critically on research that was conducted on 218 young adults from the eastern and western deanery of the Osijek area. Young adults participated in the Marriage Preparation course during six encounters (the encounters were held in the eastern deanery from 2 to 14 March and in the western deanery from 6 to 22 February 2017) which were organized by the Committee for Marriage and the Family of Đakovo-Osijek archdiocese and the abovementioned deaneries. Analysis and critical review of young people in the city of Osijek and nearby communities on their thoughts about values, expectations, disappointments, and hopes in the period before marriage is presented in the first part of the work. In the second part, one of the most important dimensions for a successful marriage and a happy family - the religious observance of young people - is analyzed and their religious practice is shown through the typology of (un)believers (practical believers, traditional, occasional, religious, and atheists). Among young people in the city of Osijek, 27.06 percent identified as practical believers, 35.32 percent identified as occasional believers, 26.6 percent identified as traditional believers, 8.25 percent identified as agnostics, and 1.37 percent identified as atheists. [ABSTRACT FROM AUTHOR]