Square · 90° apart
Square
Same modality, clashing elements. Genuine friction, and genuine momentum: this pairing produces change, not comfort.
Air · Fixed · ruled by Uranus (traditionally Saturn)
Brings. Thinks for itself and cares about fairness at a scale beyond its own circle.
Struggles with. Intellectualises feeling, and mistakes emotional distance for objectivity.
In love. Values friendship inside a relationship above romance. Needs autonomy preserved.
Water · Fixed · ruled by Pluto (traditionally Mars)
Brings. Sees through pretence instantly and commits completely once convinced.
Struggles with. Tests people rather than asking, and remembers slights for a very long time.
In love. Intense and private. Wants total honesty and gives it slowly.
Aquarius is fixed air; Scorpio is fixed water. Sharing a modality means handling change the same way, which sounds helpful and often means competing for the same role.
Sun signs are one factor among many, and astrology itself treats them as a starting point rather than a verdict. Two full charts describe far more than two birthdays do.
Computed, not asserted
Zodiac signs are not equally common — the Sun spends different amounts of time in each, so some pairings occur far more often than others. This one is 1.248% of all possible pairings, which ranks 63 of 78.
12 of the 78 pairings form the same square. Worth knowing before treating this aspect as a distinguishing feature of your relationship — a sixth of all couples share it. Note also the rising times: at London’s latitude these two signs spend very different amounts of time on the ascendant, which is why one of them turns up as a rising sign far more often than the other. The full table is here.