cowboy...My method is to not talk about to anybody, even in a bar. I learned the hard way. My wife knows a little about it but the less SHE knows the better off WE are. LOL
Yammering on about stuff like this is what message boards are for. Then when you go to church you just act normal--"Yeah, things are okay. How are you doing?" I've trained myself so well in this manner that when I went to my local tavern the other night an aquaintance asked me how I was and if anything exciting happened this week. For the life of me i could think of nothing.
Tell her how many shares you own (well tell her 1/4), the outstanding shares, and then throw in to the mix 2 billion barrels, the price of oil and leave her alone for a while. The numbers don't have to be exact, and she'll catch on a bit faster.
BUT be careful as she might want to go from girlfriend to bride real fast!