Most Helpful Girl
Jealousy is something both men and women experience, and individually, some people are very jealous, some people don't get jealous at all, and many people are somewhere in between.
Jealousy is often the result of a person's own insecurities and/or mistrust. A woman may be jealous because she doesn't feel like she's as good as other women, or she may get jealous because she doesn't trust that her partner will be faithful.
On the other hand, jealousy may also warranted. It can be that "spidey sense" that tells us that there's a problem with our relationship and the way that our partner is treating us (e. g. if your partner is neglecting your needs, or if your partner is overstepping boundaries with other people).