The angle between your signs — the square (90°)
The square is the aspect of tension: you want the same thing at the same time, just not the same way. This bond never falls asleep. It asks you to pick your battles, and makes you both stronger when it holds.
Your elements — Air and Water
Air analyses, Water feels. One wants to understand, the other wants to be understood. A bond that asks for patience — and teaches you both another language.
Your rhythms — mutable and mutable
Two mutable signs: you both adapt. Anything is possible, nothing is set — sometimes someone has to decide.
Your rulers
Gemini is ruled by Mercury, Pisces by Jupiter (Neptune in modern astrology). Words and wit, facing expansion and faith.