If you dream about someone of the opposite gender, it may symbolize qualities or traits that you associate with that gender, and which you may wish to incorporate into your own personality. For example, if you dream about a strong, confident woman, it could indicate a desire to be more assertive and self-assured in your waking life.
If you dream about someone of the same gender, it could represent qualities or traits that you already possess, or which you admire in yourself. For example, if you dream about a kind, nurturing man, it could symbolize your own caring and compassionate nature.
If you dream about someone who is a different gender than you are, but who is taking on traditionally gendered roles (such as a man cooking or a woman working in a high-powered career), it could symbolize a desire to break free from traditional gender roles and expectations.
If you dream about someone who is a different gender than you are, but who is behaving in ways that are traditionally associated with your own gender (such as a man being emotional or a woman being aggressive), it could symbolize a desire to express your own emotions or assertiveness more freely.