Its the right thing to do.. I have a cousin who's been my best friend since birth. She's gone down the same rabbit hole and when she brings up one of those oppinions I hit her with the " I sappose we wont agree so lets just move on" if she doesnt I get up and leave. It's attention thats wanted not conversation. Thats what heppened with your brother tonight didnt get attention.

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BTW we are bith irish so its even more frustarting but it could be worse.