All 12 Zodiac Sign's Soulmates + What Makes Them Compatible Libra heart most suitable horoscope signs are gemini, water bearer, and ram. When it comes to matters of the heart, Libra seeks balance and understanding above all else. Gemini can offer adventure and playfulness to the relationship, while Aquarius shares Libra's appreciation for mind and originality. Aries, known for their passion, can ignite a spark in Libra's being. Libra and these signs create a well-rounded and fulfilling union.