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 — Water and Air
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 — fixed and fixed
Two fixed signs: you both hold on. That is your strength, and your friction point: when you disagree, nobody gives in first.
Your rulers
Scorpio is ruled by Mars (Pluto in modern astrology), Aquarius by Saturn (Uranus in modern astrology). Drive and fight, facing structure and time.