"You are our top concern here not him.. "

And you should be your main concern too. It is honorable to be considerate of others feelings but not at the expense of your own and especially of your own wellbeing.

He has problems and you are not the solution to his problems... being nice to him won't help him, only when he realizes he has a problem and gets help will he be on a better path.

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--http://www.idexter.com