We know each others' passwords but don't have reason to use them. I don't say or do anything behind her back that I wouldn't say or do in her presence. My wife is equipped and perfectly capable of doing anything to me or for me that any other woman on earth could and she's not going to find some guy with a magically vibrating penis or any other fascinating appendage. I'm perfectly able to do anything for her that any other normal guy could and I've got more reasons to want to. Why sneak out of the fence if your own pasture's green?