Likewise, when Libra is looking for peace, Aquarius introduces a refreshing unpredictability that keeps the duo engaged. Libra and Aquarius, their respective planets, help them develop these characteristics in their relationship and forge an unbreakable bond. The ruling planets of these zodiac signs help them come to terms with the true meaning of harmony and individuality in each other's lives. One of the main things that binds Aquarius and Libra together is their common element, air.