They are often thought of as sexually driven creatures. Needing to consume the souls of others through dreams by means of their beauty. People may relate due to their value of beauty and the resulting domination they may get over people, whether they have it now or just long for the ability. Due to these creatures control over the dream world, their own dreams are likely to be easily fulfilled.
Dreaming about them can omen about a person in your life that you may see as sweet and beautiful, but may very well be a snake in the grass. Could also be a warning in love, and to re-evaluate your choices in partner, as there is a draining feeling and often the relationship is one sided. If you are the Succubus/Incubus in the dream you may the the one taking from the relationship, or putting to much value in your own needs.
Please note that all meanings and personal mythologies listed on MyMythos are subjective to every individual.