If there is jealousy appearing in your dream, there is nothing to figure out here. This one is what it is, and is your message from your dream world that there are feelings that you need to deal with. You want to pay attention to the other figures in your dream as well, because sometimes it is not you that is the jealous one. Sometimes someone else in your life may be feeling this, and your dream comes to you as the warning flag on this.
Feelings will be paramount during a dream like this, so you want to pay as close attention as you can to each of the feelings that are represented. Alternatively, sometimes jealousy coming from you within a dream suggests insecurity and matters of vulnerability on your part. This could be a simple matter of loving yourself more and working on ways to increase your self-confidence.