The aim of this study was to define the role of sex, attachment style and relationship status in emotional and sexual jealousy in close relationships. Relationship status was defined as relationship length and level of commitment within it. There were 223 participants, in the age of 20 to 35. All of the participants were in some form of a close relationship at the moment of their participation. According to that, all of the instructions and items within used instruments were adjusted to relate to the current relationship of the participant. These instruments were used: general demographics questionnaire, Experiences in Close Relationship Inventory – short form, forced-choice jealousy measure, and Likert-scale jealousy measures. The results of this study showed that women and subjects in highly committed relationships tend to choose emotional, while men and subjects with low levels of commitment to relationship tend to choose sexual jealousy as more upsetting. It was also found that tested variables significantly contributed to explaining variances of the two types of jealousy – 31,2% of the variance in response to emotional jealousy and 20% of the variance in response to sexual jealousy has been accounted for. In addition, sex and commitment level appeared to be significant predictors of inclination to emotional or sexual jealousy in the forced-choice method. The odds for choosing emotional jealousy as more upsetting than sexual jealousy are higher for women and subjects who are in highly committed relationships.