Two kinds of nerve
Both signs have Mars as their traditional ruler, and they recognize courage in each other straight away. Aries has the brave kind that runs at things. Scorpio has the brave kind that stays in the room with something awful and doesn’t look away. Each finds the other’s version a little thrilling, and neither is easily scared off. Attraction tends to be strong and arrive early.
When it’s going well, they’re formidable allies. Aries makes the bold move and Scorpio has worked out what’s really going on. Friends learn not to get on the wrong side of the two of them together.
Openness against privacy
Aries lives out loud. They forget quickly, and they assume you have too. Scorpio keeps things private, remembers details, and takes loyalty very seriously. So a throwaway flirt at a party, which Aries has forgotten by the parking lot, can sit with Scorpio for a long time.
Scorpio’s quiet can drive Aries wild. To an Aries, silence is a kind of lying, and they’ll push and push to get a reaction. To a Scorpio, being pushed feels like a raid on something private. Jealousy and control can both show up here, and it’s worth being clear: strong feelings don’t make checking a phone or dictating someone’s friendships okay, whichever of you is doing it.
How to fight fair
Agree on a rule that neither of you uses what’s been told in confidence as a weapon. Scorpio can try saying “I’m upset, and I need a day” so that silence has an end date. Aries can give that day without following them from room to room. Afterwards, actually finish the conversation, since a fight that’s dropped tends to come back.
These two Suns describe the heat. They don’t describe how the heat gets used. That’s in contacts like Venus square Mars and in whether your Moons can soothe each other once it’s over.