The feeling is uneven. It lasts if you keep adjusting, not if you wait to match.
The two of you
Virgo. You feel real when the thing works. People see the competence. They hand you what is messy.
Aquarius. You feel real when you are allowed to be slightly apart. People see the difference, and the idea that arrived before the room was ready.
What wears it out
A mess you are not allowed to fix drains you. So does thanks that stays vague.
A room that wants you normal drains you. So does closeness that asks you to merge.
Virgo wants something solid and adapts quickly, and may not finish. Aquarius needs to talk before it feels real 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 the work of an ordinary day. The other way around, it shows up as sex and what they cannot take lightly.
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.