It feels easy, like you already know how to be around each other. The risk is you stop choosing it.
The two of you
Cancer. You feel real when the room is safe. People see the care. They come to you when something hurts.
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
A cold room drains you. So does having to pretend you do not mind.
Small talk that asks you to be fine drains you. So does a secret kept from you.
Cancer feels it first and explains later and starts things. Scorpio feels it first and explains later and does not like to be moved once settled.
Wanting each other is not the hard part. Staying awake to each other is. Comfort can turn into taking the warmth for granted. Together, it shows up as romance, play, and being admired. The other way around, it shows up as the bigger plan, farther away.
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.