My girlfriend is giving me mixed signals about ual things?

My girlfriend and I have been dating for nearly 2 years. We are both still virgins and don't plan on having until we are married. When we had been dating about 14 months or so we decided to try / and it caused some problems at first but for a while she really seemed to enjoy it. Now it's been nearly 3 months since she has given me a and I'm starting to feel very used. She will tease me by grabbing me through my pants and saying things that she wants to do to me and how its so hot. She will start making out with me and go through everything and she gets me to finger her for a while.. then she just rolls over and says "i'm tired" or "i'm hungry" and doesn't do anything to me at all. She has absolutely no objections to me doing things to her and then she will say that she isn't comfortable doing things to me and that because of her past it makes her very uncomfortable (years before we started dating she was into cyber using webcams, and when she was a littler girl she was violated by an older girl). I've re-ured her that I have no problem with just not doing anything ual at all.. yet she seems to just want me to do things to her and have nothing to do with me. I told her that it makes me feel used and i don't appreciate it if she is going to tease me and then not do anything to me and she will apologize and just keep doing it anyways. This isn't about me "not getting any" because i don't care about that.. I just want to feel like she gives a **** about my feelings instead of using me for her pleasure and then not giving a **** about me after that. She also always says how she can't wait until we are married so that we can have all the time.. but i get the feeling that she is just saying that because she thinks its what i want to hear.. which it isn't. What would you do?