EDITOR#56:
The problem you describe is one that boggles the minds of people of all ages. Every situation, and every person are so drastically different that answering this question becomes difficult. Whether or not you should make a move depends on the person and what kind of a relationship you currently have.
There is always a risk involved when it comes to taking that next step. Your relationship will either develop into something a little bit more, stay the same or maybe even become somewhat awkward. Like I stated earlier, all of this depends on the person in question. I cannot accurately determine whether or not you should confront her because I know nothing about either of you. However, you cannot torture yourself with unanswered questions. If you are extremely inclined to tell her how you feel and cannot stand waiting anymore, then you should try it and see what happens. You cannot allow fear of what the other will say mess with your mind. If you feel like you have to tell her then just do it. Yet you have to prepare yourself for any situation. You may never know how the other person will respond beforehand. Be prepared for any type of answer, and if it is not the one you want, do not feel discouraged. There are many other girls out there and you will find one that feels for you the way you feel for her.
Good luck and I hope the decision you make is what makes you the happiest.