There are no words... Honestly, this is the most bizarre forum topic I've EVER seen, and I'm also a regular contributor on a hardcore fetish website!
That said, if I did suddenly find out my partner was the infamous Adolf (assuming I'd missed the whole short Austrian with a toothbrush moustache and megalomaniac complex), I'd probably attempt to get him to give up on the whole Lebensraum thing and focus on his painting and writing. After all, nothing's more calming than doing a nice landscape painting, and Mein Kampf is one of the best selling books of all time. I reckon with a bit of loving persuasion he could've been enticed to give up on his plans to destroy all opposition and impose a thousand year German Reich over the entire world. Failing that, I'd gently ridicule his plans for global domination until he was forced to vent all his frustration by posting on The Daily Mail's web forums about how there's too much immigration these days and the world would be better off if everyone just went back to their own countries. Which would obviously take up all his time. Either way, I'd save the world from another world war, and I'd get to say I'm going out with Hitler. Job done.