There are people out there that are just naturally and obliviously charismatic and flirtatious, despite not trying to be (I know one of those people, in fact. Like your boyfriend, he calls everyone 'Hun' and 'Sweetie', but doesn't think anything of it). If you're worried about it, have a chat with him.
Let him know that it makes you feel a little odd that he refers to everyone as 'Hun', and that you're not sure what to think of it. You never know - maybe he's unaware that he's even doing it. This may bring the matter to attention and make sure you address it directly; just poking at the subject may not get you anywhere.
Be straight with him that it concerns you slightly, and that, while you don't feel jealous, you feel a little paranoid. If he truly cares about you, he should tone it down a bit, or stop it completely - but don't give him a hard time. After all, old habits die hard.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.