If he is troubled, be sympathetic.
If he is rude, be specially courteous.
If he is muddle-headed, be specially lucid.
If he is pig-headed, be patient.
If he is helpful, be appreciative.
If he shows his love, reciprocate.
If he convicts you of a mistake, acknowledge it freely and even with gratitude.
But never let a flavour of the patronising creep in.
Loves love. (: