As long as you are NEVER willing to give up, not matter WHAT she does . . .
And as long as you are happy with crumbs . . .
Then crumbs you shall get, and you will never get her back.
It's basic "push/pull" human dynamics, BTM. Be willing to take JUST ANYTHING, and JUST ANYTHING you will get. Let her go, and begin to move in the other direction, and you MIGHT just have a chance.