neptunerising replied: "What you want to do is compare Venus to Venus sign, and Moon to Moon sign. It helps to read about each others Mercury signs as well, to see the way each other communicates and processes information and thoughts. Cafe Astrology is the best site that I have come across to see which matches are easier or more difficult. No signs matches are impossible, but some just require more love and understanding to make it work! Here is the Moon compatibility, though: The two of you are opposites in many ways and you are each drawn to the qualities in your partner that you lack. Libra doesn't really feel complete without a love partner, and instinctively knows how to share, blend with, and harmonize with people, while Aries is more self-reliant and assertive, and often rather inconsiderate of others' needs and desires. Aries instinctively takes charge and tends to run the show, while Libra is the conciliator and compromiser in your relationship. Libra depends a great deal on others' approval, often lacks a strong sense of self or personal direction, and may simply go along with Aries much of the time, for Aries has stronger preferences and less willingness to accommodate a partner's wishes. Libra wants togetherness, while Aries needs time to go off alone and be a free agent sometimes. Also, Aries is rather impulsive and volatile, and is prone to outbursts of temper, while Libra is more rational and often avoids unpleasant emotions, especially anger. Therefore, Libra may appear to be the nice, likeable "good guy" in the relationship, while Aries is cast in the role of the trouble maker. When personal problems arise, Libra wants to discuss them with a counselor or friend, is open to suggestions and others' opinions, and wants to negotiate a fair, equitable solution. Aries is less likely to seek outside help and may have little patience for talking and airing the problem, unless some clear, concrete change results. The two of you will have to do considerable adjusting in order to live with these differences between you, even if other astrological aspects indicate harmony and compatibility. The color code this one gets is Pink which means:Pink is Opposites Attract! - Your Moon signs are opposite. You find each other fascinating, frustrating, and intriguing--all at the same time!"