He is "bad": short-tempered, violent, aggressive. He says the "wrong" thingsShe is "crazy": "irresponsible", "unpredictable". She also seems to keep saying the "wrong" things.
And yet, despite their pathologies, neither is cast out. He knows that she is, by conventional standards, "crazy." And she can not be blind to his aggression; she feels his hand across her face. And yet neither is willing to condemn the other to being "bad"; neither is willing to to give up. Their bond - their world - contains them, with all their problems.
He says, "I love you", and she knows that he speaks the truth. Not only this, she knows that his "love" is not a deception designed to cover up or explain away "bad," that it is as honest as love can be.
Their love is an unconditional attachment, one that does not allow easy dismissals. It demands an understanding and a carrying. It says, "I see that you are weak, and I will carry you." Marriage becomes an archetype of the accepting environment, and a microcosm of the accepting community, the accepting society.
In this sense, to know love is to be on the path towards true citizenship.
