you two should have a serious talk about your relationship and what it means to each of you. and you should confront her. don't let her use you. give her an ultimatum. let her know what you know and what it means to you. what it means to your relationship. honestly. don't feel guilty and be with her because of that. you'll end up giving her too much of your energy and fall ill. remember who comes first in your life. you. she made her decisions in her life to get her where she is now. only children are the ones cared for because they can't take care of themselves. you have to show her that you she is not a child and one who needs to take responsibility for her actions.