The feeling is uneven. It lasts if you keep adjusting, not if you wait to match.
The two of you
Aries. You feel real when something is starting. People see the one who goes first. The heat is obvious, and so is the courage.
Scorpio. You feel real when it is honest, even if it is heavy. People see the intensity. They trust you with the thing they will not say elsewhere.
What wears it out
Waiting drains you. So does a room that manages you instead of letting you move.
Small talk that asks you to be fine drains you. So does a secret kept from you.
Aries runs hot and wants it now and starts things. Scorpio feels it first and explains later and does not like to be moved once settled.
Nothing in the two signs locks on its own. Some days you understand each other. Some days you are solving different problems in the same room. Together, it shows up as sex and what they cannot take lightly. The other way around, it shows up as the work of an ordinary day.
This is the answer people want before anyone knows a birth time. Two real people have more than a sun sign. If it matters, cast both charts.