I had it with my ex boyfriend, my Moon in his 8th house and his in mine.
It sure was intense, but not necessarily in a positive way.
There seemed to be some kind of "psychic" connection, so I could sense his emotions, and as far as i can tell, it was the same way for him.
However, it was destructive at times, since all these
plutonic emotions are very hard to handle.
On the other hand, I also have a friend with whom I share that placement (her Moon in my 8th house) It's a very deep friendship, I feel like there are no secrets between us. We've gone through many things together and are always there for each other.
But, there are also NN/SN connections involved.