What do you think of the social chemistry strangers have with eachother?

Question

What do you think of the social chemistry strangers have with eachother?

Answer 1

Biochemists say pheromones.  Jungians say it's related to the universal unconscious.  Sometimes people, when people have quite a bit in common, not just interests, but also a compatible style of communication, etc, they seem to "click".

Answer 2

It gets better the older one gets - less inhibitions I suppose and a greater freedom to be themselves.

Regards. UK