Dear I can totally identify with your situation and I know I can see what you going through depression, helplessness, defocused, self-centered, close-minded, demanding, and wishful thinking , few points I wanted you to know and think about when you are alone its all about what you feel and why you are feeling over all in your sharing what I have noticed I have mentioned your feelings is what you feel no one is making you feel so dear be more strong and accept the things you cannot change for an ex: you cannot change the weather or the traffic jams you got to accept it .all I want to say is when you feel she is using you in all areas so what are you waiting let go is the word dear if she is interested or has same feelings or respect for what you feel for her she will definitely come back .

I will tell you a story may be it will help you understand things better
There were two monks one senior and a junior monk they had to attend an important prayer at a temple which was across the jungle, while waking through the jungle they came across a river ,next to the river there was a old lady who was sitting and crying ,the senior monk polity asked the lady what happened and she replied that she had to attend is grandson wedding and to reach that place she has to cross the river as she is too old and doesn’t know swimming she cannot go ,quickly without any second thought senior monk replied we will take you on our shoulders through this river ,and they did ,after crossing old lady blessed them and thanked them ,.but the junior was not happy with the idea what they did. Later they continued there journey but the junior was cursing the old lady repeatedly as his back was paining, after every mile he was repeating same thing and senior monk was just smiling at him junior got irritated with the smile and shouter and asked why we had to do that and said he cannot walk any more as my back is paining so much coz of that old lady you go ahead I am not attending the prayer, then the senior monk replied ,my back is not paining coz I let the old lady go of my back after crossing the river but you still carrying her let go of her so that we reach our destiny
The moral of this story is let go to reach your destiny, action speaks more than words .
i hope you under stand what i am saying take care dont get carried away..........