My wife and I met in law school, where it was well known in the student body that I was one of that small group of people who (GASP!) owned guns. Then again, since I was atill in the reserves, I went to class in uniform (BDU's) on more than one occassion, and one more than one occassion, had an empty drop holster on my thigh when I walked into class. Talk about getting people's attention. Anyways, she knew about the guns from the beginning. her only rule was that I secure them, for the safety of our children. She's gone shooting a few times, but has other hobbies that interest her. But, hey, it's not like I'm dying to do cross-stitching becuase it interests her.
Honesty up front can and will prevent pain later.