I wish, if my girl wasn't down to fuck, she would masturbate with me or jack me off or suck it or something. But, when she is off she is off of intimacy and that means doing anything with anyone else. So she will go masturbate by herself. Which is fine. But, still I was hurt. I am still slowly coming to terms with accepting that people really are different and that includes sex and intimacy.

I mention my story because, and I'm going to assume here, that for people like you and I it seems so simple to do these sexual and intimate things, and because of that it's difficult to understand how one's partner wouldn't want to do something so simple that gives us so much pleasure. But, intimacy is not easy for some people all the time.

For me personally what really helped me come to terms with all of this is when the infatuation turned into love. Infatuation is just fucking intense and for me it was hard to deal with. I would look into every fucking detail and just let it snowball out of control inside my mind. You've been going on two years though so I'm not sure you are still infatuated.

While on that topic: Another consideration is how some people have this shift in views about sex once they start loving people. A shift where one believes that they shouldn't treat nor be treated as some kind of sex object because this is the person I love or should be loved by. It's an unfortunate sexual view as there is no reason things shouldn't stay fun and exciting forever. Or, as others have said it could just be his libido stabilizing after the honeymoon period.

In my experience there are small relationship libido concessions that can be made with perhaps some hopeful larger shifts over a longer period of time. For example, my girl started putting in an effort to have more sex and give me some quickies. Overall though you can't make some sex-crazed who just isn't wired that way. You too will have to learn to live with some concessions in that regard.