Why Do We Hurt Those We Love Most And How To Stop This

You love each other but can�t manage to communicate without arguing, fighting and ending up exhausted, each one in his corner, trying to lick his wounds and thinking of how to protect one self against a new attack. And in spite of that�you love each other? How is this possible? Why do people hurt most those they love?How come we can�t express our love? How come we are full of good intentions but