The purpose of the study is to examine differences of passionate love by culture, sex and the state of being in love at the time of the research. It was conducted with a total of 235 young people, 118 from a Turkish University and 117 from a US university. As a data collection tool, the Passionate Love Scale (PLS) and personal information forms were used. In this study, it was found that culture and the state of being in love affected passionate love. It was also found that university students in an individualistic culture (the US) reported a higher score of passionate love. However, there was not a significant difference for passionate love between scores obtained by both males and females from the US and Turkey. Furthermore, the PLS scores of the university students in love were significantly higher than those of the students who were not in love in both countries.