Hey Mike, You have gotten some wonder suggestions from Kitt and Shy, they are always so great with the advice. I sort of got a different idea though when I read your first post. It almost seemed like you were cool with all the changes that had taken place within your relationship with her....that is until she started with the Ohio guy. Do you think perhaps the reason why your feeling hurt and all is because you may be worried some where in the back of your mind that she may up and leave and that would take away your close friendship with her?
I have known many people who were physicial with each other and for whatever reason their relationships had changed or moved to just being best friends or really close friends. Which they found out was what suited them best. If they can handle doing that, then fine. And it sounds as if you too were doing just that up until this point.
I dont know I am just throwing some ideas out there...but I do think you need to try to get out and seek some new friendships others to hang out with.