Scorpio and Aquarius
Here two different kinds of stubbornness meet: Scorpio doesn't give in out of feeling, Aquarius doesn't give in out of principle. Neither changes their mind just because someone raised their voice, so arguments can last for days in a polite, icy calm. What holds them together is a rare respect: Aquarius doesn't run from Scorpio's depth, Scorpio doesn't try to tame Aquarius's strangeness. The reward is a bond in which nothing has to be performed, as long as both occasionally learn to give in first.
Scorpio · Water
Most in harmony with: Cancer, Pisces, Virgo
Aquarius · Air
Most in harmony with: Gemini, Libra, Sagittarius
The harmony of two signs is the beginning of the story, not its end — the whole chart, not just the Sun, tells how two people truly meet.