Secondary Friends are those friends that only interact with you when their "primary friends" (commonly identified as "new friends" or a new social circle) are not available.
Usually normal friends become
secondary friends when the friendship is vanishing, a symptom of a friendship about to end, often caused by aquisition of new contacts and/or diminishing
interaction between you. Which sometimes can last years because one or both parties does not want to end it.
A: <insert friend name> rarely
talk to me nowadays, but suddenly and
randomly starts conversations with me.
B:That means you have become a secondary friend to him. His
new friends are probably offline when he talks to you.
