I explained things to my s/o when I decided he was marriage material (and we had a few fights so I knew we were out of the honeymoon phase). After the conversation that confirmed our feelings were mutual, I proposed we let each other know about ANYTHING about us that could be a deal-breaker.    If you're both on the same page about most things, that's what's important. Being WN doesn't solely hinge upon whether someone likes or dislikes Hitler.