Wow, I totally don't get that at all... I guess some people are just more uptight than others. I've sort of had the opposite of you, my wife is conservative almost a little repressive. My approach to her needs to be scripted because that's how she gets in the mood. If I try something outside of the box, so far she doesn't just go with it. She very recently agreed to try new things... but she feels like she won't be enough for me, so I think to some extent she puts her guard. Maybe your husband feels like he can't please you so he's putting on a defense mechanism?