subtle comments?

I'm 23 and have been spending time with a girl about 3-4 yrs younger than me for a couple of months. Thew other day after we had sex she said "I think you get more out of this than I do" She has also indicated that she doesn't like kissing me. It seemed like we were getting closer but now she seems to be pulling away. Should I take these comments to mean that she wishes to end whatever it is we had going on. I don't feel good about being with her after hearing these things. I guess I'll let it run it's course. Her mind seems elsewhere all of a sudden. Advice? Tweet