It feels easy, like you already know how to be around each other. The risk is you stop choosing it.
The two of you
Leo. You feel real when you are actually seen. People see the warmth, and the person the room turns toward.
Aries. You feel real when something is starting. People see the one who goes first. The heat is obvious, and so is the courage.
What wears it out
Being ignored drains you. Polite affection that never becomes admiration does too.
Waiting drains you. So does a room that manages you instead of letting you move.
Leo runs hot and wants it now and does not like to be moved once settled. Aries runs hot and wants it now and starts things.
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 the bigger plan, farther away. The other way around, it shows up as romance, play, and being admired.
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.