Dreaming about being unfaithful suggests that you take a better look at your current relationship. What was the person in your dream giving you (emotionally or otherwise) that your real life partner does not? Communicate effectively and begin to develop those areas of your relationship that need most improvement. Understanding this dream may assist you in understanding your relationship and the level of attachment to your partner. Many people write about “dreams of cheating.” Either they are cheating, or they believe that their boyfriends/girlfriends are cheating on them. In either case, they are upset and outraged by such dreams. It seems logical that these types of dreams are connected to feelings of inadequacy or dissatisfaction.
If the partner in your dream was a total stranger then the dream may be much more personal and profound. It could be telling you something about the relationship that you have with yourself by giving you clues about the nature of your unconscious.... The Bedside Dream Dictionary
Dreaming about being unfaithful suggests that you take a look at your current relationship. What was the person in your dream giving you (emotionally or otherwise) that your real life partner does not. Communicate effectively and begin to develop those areas of your relationship that need most improvement.... Tryskelion Dream Interpretation
If you dream of cheating in any manner, either by you, or by your loved one, then this is a direct warning for you to be more circumspect about your actions to and with the opposite sex. It is warning you that if you do not, you will suffer the consequences.
If you are the cheater in your dream, you may have a guilty conscious about cheating that has nothing to do with love.... Encyclopedia of Dreams
If the dreamer is the one being unfaithful, then he is dealing with feelings of guilt over an apparent betrayal.
If an actual lover is the one being unfaithful, then this indicates the dreamer’s insecurities over the relationship.
The partner may or may not actually be unfaithful, but either way the dreamer needs to deal with her feelings.
If an unknown figure is the one being unfaithful, then the dreamer needs to be more discriminating with regard to who she calls friend. Astrological parallel: Mars/Pluto combinations Tarot parallel: The Devil... Dream Explanations of Astro Center