Fail love

2 Samuel 14:21-33
Joab went to Geshur and brought Absalom back to Jerusalem. But the king said, "He must go to his own house; he must not see my face."
Two years later Absalom set Joab field on fire, then Joab come to Absalom's house, then Joab went to the king and told him Absalom want to see him. Then king summoned Absalom, and he came in and bowed down with his face to the ground before the king. And the king kissed Absalom.
Joab wins his point, and Absalom returns from exile. But two long, frustrating years pass before his admitted to his father's presence, and the relationship is deeply damaged.
Why?
v17,v20: Knowing right from wrong/good from evil may equally mean knowing everything.
It was Absalom hair which eventually brought about his dead. The weight is about 2.3kg/5lbs.
Joab wasn't come to Absalom's house because David has said to him, it is not permitted to see Absalom.
David let his son come back but don't see his face. It is not good altitude of a father to his son.
How?
Action of love did not work through the end and recover the relationship, it is fail love.