Complete Dictionary of Dreams

by Dr. Mıchael Lennox
The “other woman” is a staple in many cultures where a man goes outside of his marriage vows in order to have his sexual needs met. At the heart of this structure from an interpretive perspective is the circuitous route that’s being used to generate a fundamental human experience that partnership is designed to provide.

If someone appears in your dream and is indeed identified as either your or someone else’s mistress, that person is a character aspect of your own personality.

The representation here is about the desire to connect to intimacy without emotional risk.

My Dream Interpretation

by myjellybean
To dream that you (or your romantic partner) has a mistress may suggest your unconscious desire to end your current relationship. You may be finding ways to sabotage it. Alternatively, you could feel neglected in the relationship.

If you are single and have this dream, it suggests that you or someone in your circle is being lured or tempted into some negative activity.

To dream that you are someone’s mistress indicates your desire to get things without working for them.

Dream Dictionary Unlimited

by Margaret Hamilton
Any illicit activity, i.E. “Lady luck” in gambling; alcohol or drugs to an addict, wealth to the greedy, etc.