Capricorn is the tenth sign in the Zodiac. It is the sign that's at the very top of the Zodiac wheel. This has a meaning for astrologers in that the Capricorn's drive in life is to achieve, not necessarily because it's power hungry but because it wants to do its utmost to be more than perfect, it's the best, to be the one who excels, that's the word. Capricorn looks for excellence. Capricorns can be very driven, very controlling. The Capricorn likes structure. It wants rules, wants to follow its own rules, and to create an existence, let's say even a home life, a work life, an environment in which he or she knows what's expected, does the best that he can, she can, and then excels at that.
In a relationship, sometimes Capricorn can be over controlling and can be over exacting. Capricorns are deeply loyal. Capricorn is an earth sign. Again, in astrology earth stands for stability. What a Capricorn can give is longevity. Capricorn will be there forever, but also a Capricorn has its own criteria, has its rules. You don't play with a Capricorn's heart. Capricorn wants again to use the word truthfulness, authenticity, reliability in its love affairs.