Hi,I have different thoughts about your situation. First one is that you really feel nothing to your girlfriend and, eventually, you can do nothing in this particular situation. Love is a deep feeling, you have it or you don`t have it. I think that you have a respect and sympathy to your girlfriend, but you are not interested anymore in your relationship. I would suggest you to take the short break, stay away from each other for some period of time. This would help you and your girlfriend to put your relationship on the scale and to see if you miss each other.All the best,Mika