I love this! I don't think any of my ideas are original, per se. I've read so much and studied so much, I'm a product of many other people's ideas.
So that said, yes, I believe when we've had that type of relationship, we intuitively feel the other person reflecting back to us the qualities we broadcast - which we have only one word for - mirror! And yes, it's even better when it's an honest appraisal - not a fun house mirror type delusion.
I'm always so glad when someone reads what I've written and says "Yes! Me too! I've seen or experienced that as well!" In the end we're all having the same human experience and it feels nice to know that my fellow humans are in the same boat as me lol.