Isn't it amazing when you and someone else know each other better than anyone else you're with?
When the two of you can say things like, "remember that time we..." or "but you have that at home!" or "you know the thing I have...?"
And you can finish each other's sentences, and you share inside jokes. All this stuff that people just accept over time, and they know they can't reach the level we are at with each other. Like it's common knowledge that the two of you act really domestic, almost like you live together.
It's like a dream - almost like having another sibling.