The Moon is the most important 'planet' in relationships. The Moon represents deep security needs, and it is difficult to be with with someone who does not offer us what our Moon needs. Positive Moon compatibility will show two people who feel "at home" with one another, and instinctively care for one another. It's like being family. That's why it's the most important planet in synastry. If you want to spend the rest of your life sleeping in the same bed as someone else, you obviously need to feel like family to one another.
Moon Conjunct Pluto
You feel an almost magnetic sexual attraction and a empathetic physical and mental connection to your romantic partners intense emotional desires. This bond exists at both conscious and unconscious levels and your response and receptiveness extends beyond present time. When the Moon person is in conjunction with the Pluto person, they will be responsive to both your conscious and unconscious needs and desires. Your relationship is actually acting out and working out old relationship issues as through those you experience with your partner. Your actions and reactions in this relationship have potential for immense spiritual growth.