A 12th house Mars in synastry does not mean your relationship is doomed. When someone brings their Mars energy to your 12th house they activate your 12th house personality components. Mars brings an assertive, aggressive, active, challenging and energizing influence to your 12th house. The 12th house is about secrets, fears, the subconscious, criminal activity, spirituality, ghosts, dreams, meditation, retreat, solitude, imprisonment, museums, hospitals, institutions, merging, imagination, the intangible, and that part of you that you can’t see well, and can be the self-undoing.
Someone’s Mars falls in your 12th house
When someone’s Mars falls in your 12th house you may feel that you have nowhere to hide. These people actively engage the parts of you that you’d rather ignore or that you didn’t realize existed. How well you respond to someone whose Mars falls in your 12th house depends on how open you are to facing your fears and clearing out your psychic junk. Maybe you don’t want your 12th house activated. Maybe you don’t want to remember your dreams. Maybe you don’t want someone pointing out your bad habits.
The positive is that, if the Mars person has your best interests at heart, he or she can help you acknowledge and overcome the habit patterns that hold you back. This person can become a great ally in your spiritual growth. This person already knows how to actively use the energy that you are barely able to recognize in yourself.
The negative is that, if the Mars person is selfish and self-serving, he or she may use their knowledge of your bad habits, blind spots and personality weaknesses to manipulate or hurt you. You may have trouble seeing this person’s actions for what they are. At the extreme this person might actually encourage you to become your own worst enemy.
Your Mars falls in someone’s 12th house
The positive is that you can help the 12th house person get to know himself better. You can encourage the 12th house person to open up about secrets, share sorrows, and help this person release internal grief and trauma. You may find a shared interest in spiritual activities. The 12th house person can help you learn to relax and let go of the need to be doing things. You may find your actions becoming increasingly spiritually-oriented and you may find yourself acting more strongly from a place of inner knowing.
The negative is that you may feel the 12th house person doesn’t appreciate all that you do for him. You may feel that your efforts get taken for granted. You may feel that the 12th house person doesn’t acknowledge your sexual needs. You might feel that the 12th house person doesn’t find you sexually attractive. It may seem that no matter what you do, the 12th house person doesn’t notice your advances. You may begin to think that your actions are futile.
If you are the 12th house person you will have to actively notice and acknowledge the Mars person’s efforts. Make a point of telling this person that you find him attractive (if it is a sexual relationship). You will have to be willing to confront your bad habits and deal with them.
If you are the Mars person you will have to learn when to back off and allow the 12th house person privacy and solitude. Not all secrets need to be shared. Learn to relax a little. Be wary of the selfish motivations behind your actions and the impact they may have on the 12th house person.