As he believes it so strongly, can there possibly be something wrong in your content of talking with him ? And the worst part is , you are clueless about it ?! Just an example : you keep giving him Advices now and then to make things he do better out of pure goodwill. But on the other h end, he feels it is an unwarranted intrusion into his personal space. Not to offend you; but to make you introspect if anything is wrong at your end.