I should mention that it isn't that there is no desire to be physical on her part. The reason why she won't let me get to second base is that she doesn't feel she would be able to say "no" if anything progressed physically any more than it already has.
I've learned a thing or two in the bedroom n the time since I was a shy 14 yr old boy, and I'm pretty sure I could push her buttons and get her to the point where should would given in to physical urges, but I don't out of respect to her. I wouldn't want to ever do anything to hurt her.
It's just hard to express love and intimacy without the physical aspect of it. When I kiss her I don't want to have to be worried about what areas I shouldn't touch, or retaining complete control of myself. I just want to let go and be with her wherever and whatever it leads to.
I just could never find the words to tell her how special she is to me and how much I love her, I'd like to be able to show her.