Have you ever, for any reason, acted like your conflictor's dual?

Currently, I'm in a course with a ISTj--who is famous and influential in journalism--and I don't wanna f* it up by 'conflicting' ... In the classes, (only three so far,) I've consciously acted like a ENFj--currently, I am one of his favorite students lol... It takes tremendous effort to act this way--I feel like a total asshole doing it--and I'm going to stop b/c my conscience tells me it's wrong.

The reason I'm posting is b/c I'm wondering if anyone else has had experiences like this..? I.e. where it's been in your best interest to have a positive relationship with your conflictor? How did you handle it..?