I just finished reading Click: The Magic of Instant Connections, and here are my thoughts on it below.

I am really interested in this subject of clicking but even more so, how we stay “clicked”. I really appreciated the depth the Brafman brothers
went to in explaining what they think makes people click, but somehow I think they still did not hit on the X factor, for long term and enduring relating.
The points that the Brafmans use to explain their examples of connections seemed to rely upon implicit agreements and therefore chance meetings.
I do believe that long lasting and quality relationships are dependent on who we choose and how we go about choosing them and an agreed to set of
simple explicit rules of engagement or behaviour.