Square · 90° apart
Square
Same modality, clashing elements. Genuine friction, and genuine momentum: this pairing produces change, not comfort.
Water · Cardinal · ruled by Moon
Brings. Reads emotional undercurrents accurately and looks after people without being asked.
Struggles with. Withdraws instead of stating the problem, and keeps score in silence.
In love. Slow to open, fiercely loyal once it does. Takes small slights harder than it admits.
Fire · Cardinal · ruled by Mars
Brings. Starts things other people are still discussing. Recovers from setbacks faster than almost any other sign.
Struggles with. Bores quickly, interrupts constantly, and treats patience as a personal insult.
In love. Pursues openly and dislikes ambiguity. Wants a partner who can hold their own ground rather than yield.
Cancer is cardinal water; Aries is cardinal fire. 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.