It is a very powerful observation. Extending from it, when you find mutual positive attention with someone, don't take it for granted. Conversely, if someone do

It is a very powerful observation. Extending from it, when you find mutual positive attention with someone, don't take it for granted. Conversely, if someone doesn't give you positive attention, unless they are just shy, drop them from your consideration. If they are shy, slow down the pace with them, but keep the interaction channel open, and see if they come back to you.