 You at this point are unable to say, I want to do this because it's important to me. And if you already can't say what you need or what you want out loud, it's going to be tough sledding. This has nothing to do with her. You want to put this on like it's just a good idea. All couples should do this. You need to be able to look your future wife in the eye and say, this is really important to me.