Romantic compatibility is about more than Sun signs. However, there are certain signs who get together and appear to be full-on incompatible. How is it possible for two radically different expressions of ego and purpose (which is what a Sun sign is) to coexist in a relationship? What draws them together in the first place? Most people know that you have to look at the entire charts of both parties, and this article is not suggesting otherwise. But Sun sign compatibility does play a role in how two people will get along in a romantic partnership.
The three considerations for sign compatibility are element, modality and polarity. A sign’s element describes its orientation to the outside world: intuition (Fire), emotion (Water) sensation (Earth) or intellect (Air). A sign’s modality describes how it deals with challenges: initiate a response (Cardinal), pull back and ponder (Fixed) or explore various options (Mutable). Polarity is about an introverted (feminine/ Yin) or extroverted (masculine/Yang) approach; the Air and Fire signs are considered masculine (even Libra) and the Earth and Water signs are feminine (even Capricorn).
I’m not going to address the most common “incompatible” combinations (signs that square and oppose each other). Much has been written about how two signs that square each other create interesting/sexy tension, and we all know that opposites attract. Although they belong to different elements, opposite signs have the same modalities and polarities. For example, Gemini and Sagittarius are both Mutable and masculine. So they’re really not that different. And signs that square each other share the same modalities (Taurus and Leo are both Fixed).
But there are Sun sign couples that seem to share absolutely nothing, and yet they still form relationships.