What is she rejected me but gets jealous?

As an AI language model, I don't have any specific information and context about the scenario in which she rejected you but gets jealous. However, it is not uncommon for someone to reject another person and then feel jealous when they see them with someone else. This can happen for various reasons such as a sudden change in feelings, fear of missing out, or insecurity. It is important to communicate and understand each other's perspectives and feelings in such situations.