Photos used under Creative Commons from dollen
If the moon is found in the eighth house of a natal chart, the person is gifted in the art of relationships. These people can read others and pick up on their feelings. It is an area of interest for them. They may be interested in psychology, astrology or any field that probes the psyche. Eighth-house moon people not only want to find out what makes people tick, they are able to sense it.
Even if they are not emotional people, the act of relating to people is deeply emotional for them. Those with eighth-house moons are in tune with the vibes that people emit. It isn't a choice they make. It just happens, and it can be
exhausting. A trip to dinner with the extended family, where there is likely to be unspoken conflict, can be a real chore. Picking up on all the feelings and absorbing them deeply isn't always fun. Even if they try to intellectualize the feelings and toss them aside, they can never do this completely. The eighth house is a water house. It is about feelings, and the eighth house has the deepest waters. This causes many eighth-house moon people to take relationships seriously and choose them carefully.
But no matter how careful, eighth-house moon people are typically never without a partner. The eighth house is about the deepest part of relating to others and the moon is about our inner-most emotions and security needs. So an eighth-house moon's emotions and security needs are dependent on the relating to others on a deep level. They crave intimacy, and because they value it so much, they are generous in intimate relationships. The understanding of the give and take in relationships is deep-seated and they often make great sacrifices for their loved ones. The moon is caring and wants to give.
However, the moon also wants to be cared for, so they do expect care to be given back to them in return. This isn't an air sign kind of exchange though. It is deeply emotional rather than intellectual. The moon here doesn't keep score, it feels. If the feelings are right, the moon is happy.