The composite Moon in the 8th house indicates a relationship that is emotionally intense, and the feelings which are aroused between this couple are extreme and deep. The composite Moon describes the relationship's emotional coloration and requirements, and the 8th house rules the parts of life that no one wants to openly talk about. The Moon represents our need for security, refuge and retreat, and it isn’t always comfortable in the 8th house. The relationship is left sensitive to the feelings of being unsafe, threatened, and provoked. The couple may have to learn painful lessons about letting go. Futhermore, the couple might have to undergo emotional crisis and enormous change in their personal life. Almost everything in the couple’s world triggers powerful emotions.
The water houses also have something to say about the psychological family inheritance from both sides of the family. The emotional side of this relationship is hidden from other people, and the composite Moon represents the most sensitive and vulnerable area in the couple's life. The 8th house rules abuses of all kinds, secrets, and transformational healing. It’s here where the couple have emotional access to the hidden depths of relating and it also puts the emotional focus on the survival of the relationship itself.
The 8th house also deals with death, sexuality, psychology, shared resources, taxes and legacies. A really good way to understand how the composite Moon in the 8th house is operating when it is below the surface level of life is to observe what happens when a transit aspects the composite Moon. Pay attention to the heavy transiting planets – Jupiter, Saturn, Uranus, Neptune, and Pluto. The Moon in the composite 8th house doesn’t reflect one individual emotional response; it is the feeling tone of the relationship itself.
If we were to separate from our partner we would not feel that we are pulled in emotionally to matters of the 8th house, unless our own natal chart indicates otherwise. However, it is only when we are deeply involved with this person that we feel the powerful emotional tension. There is a level of fate involved when dealing with the composite chart, and we are not always left with much of a choice.
The composite Moon in the 8th house can create an emotional storm, and if it is not handled well it may create deep seated, and underlying resentment. The emotional side of the relationship has the ability to re-new itself and transform deep rooted problems in the union. However, the couple may encounter some difficult emotional encounters together and feelings of emotional betrayal, and a kind of emotional nakedness between them. Emotions may become volatile, angry, jealous and possessive in the relationship.
The Composite Moon in the 8th house can move the couple to greater depths of relating. Emotional rapport needs to be courageously honest and without pretence, or the partnership can end painfully. Difficult emotional growth in the relationship is one way to describe the Moon in the composite 8th house. However, if you manage to weather the storm it can transform the union and be incredibly healing, but only once the couple understands the true emotional depth which the relationship requires.