Because we men don't open up emotionally to anyone. A girl group talk of everything and ማፅናናት each other. A guy group talk of interests and መዝናናት with each other. Men rarely get a chance at real emotions. Our fathers only know us 'cause they passed through what we do and our mothers only know us through their mother instincts. Men are not emotional until we love. Until we find a woman who is a key to our hearts. And when that woman leaves, it not only breaks a trust of honesty, it also makes us think our honesty is a weakness. So the boy becomes man. And the man vows to never be the boy. That's why our behavior changes. Hope this helped. Good Night!