My girlfriend and I have great sex, but lately she has been asking me to talk dirty to her. The problem with this is that I thought I'd already been doing this. I don't know what to say, literally. Any hints on what I might be able to say to her? I already talk kind of dirty to her, but she wants it nasty. What do I say?

I am a quadriplegic of twenty years and need help with a problem my girlfriend and I are having with our sex life. The main problem is she feels guilty because she is the only one that gets "physical gratification" when we make love. We can't have intercourse but we have tried several other methods that worked great as far as her getting an orgasm, but the guilt sets in a few minutes afterwards. I have tried many times to explain to her that I also get a lot of enjoyment from our intimate times together, but she does not believe me. She thinks the only reason I want to fool around is just to give her pleasure and this is not true. Some of it does have to do with making her feel good, but I also get much pleasure, in a more "mental" kind of way that she can not understand. We live together, love each other very much, and plan to marry in a few months, but I'm scared this problem is going to get worse if she never believes me. I feel bad about marrying her if we can't have a satisfying sex life because I feel like I'm cheating her out of that part of her life.

If there is any way you could help me with this I would really appreciate it. If you know of any books on this subject that would also be a big help.