Nah, its totally normal hun.. Each individual has different characteristics we can appreciate and characteristics we dislike. When you date a multitude of people you will realize just which aspects are important to you. Just because you are officially committed to this person doesn't mean that you wont desire traits he doesn't have. This may make you reassess what you want in life and where you should be. Which is always a good thing to do. Helps us grow. However, I suggest not demanding he change (not that you are) and to be mindful of just exactly the things you
do appreciate in him. Whats important to you?
Love is a very dynamic organism