Numerous studies confirm that men are more jealous of sexual infidelity, and women are more jealous of emotional infidelity. These differences in jealousy are developed because of different evolutionary pressures faced by men and women during evolutionary history (paternity uncertainty for men and cost of abandonment for women). Therefore, they can be considered as a distal determinants of sexual and emotional jealousy. Furthermore, an individual's tendency to sexual or emotional jealousy may also be shaped by variables such as self-monitoring and sociosexuality. Additionally, there is a great inconsistency between findings of studies on differences in jealousy with regard to romantic-related experiences (relationship status, experience of committed sexual relationship, history of infidelity experiences). Hence, the aim of this study is to examine the differences in sexual and emotional jealousy with regard to sex, self-monitoring, sociosexuality and romantic-related experiences and to determine the predictive contributions of these variables in explaining the variance of sexual and emotional jealousy. The study was conducted via online survey on a sample of 510 participants– 230 men and 280 women, ranging in age from 19 to 28 years. The results confirm evolutionary hypothesis. Specifically, men are more jealous of sexual, and women of emotional infidelity. Regarding the differences between men and women in self-monitoring and sociosexuality, men show a higher ability to modify self-presentation and stronger attitudes toward short-term reproductive strategy and more permissive previous sexual behavior than women. There are no differences in sexual and emotional jealousy with regard to selfmonitoring. Concerning sociosexuality and jealousy, it was only found that individuals with stronger attitudes toward long-term strategy are more jealous of emotional infidelity than individuals with weak attitudes. There are no differences in jealousy of two infidelities with regard to romantic-related experiences. Finally, it was found that women, individuals with stronger attitudes toward long-term strategy and individuals who have experienced committed sexual relationship are more likely to get jealous at partner's emotional infidelity.