From personal experience I can tell you don't be afraid to let her know how you feel about things. You do not want to keep things bottled up. Her asking these kinds of things could be early warning. As time goes by and she keeps asking you the same things over and over and you refusing to give in can draw her apart from you. I'm not trying to tell you it could lead to divorce, but from personal experience, when a woman wants something so simple from the one they are supposed to be closest to, and the guy doesn't ever give it, she will fall further away from you as time goes by. If there are other issues, such as trust or not doing things that the other person wants to ever, those are just all symptoms for an eventual parting. This is not only from my situation. I have friends that have gone through similar things. Maybe this is dramatic for you, but I say give her what she wants if she gives you what you want. It will make everything even better between you.