You should actually start distancing yourself from him so that you can get over him. He's holding you back from being open to new men in your life that DO want you as a girlfriend and that new person would never take kindly to you hanging out with your friend doing date like things with him anyway so why not start to process of weaning him out of your life?
He knows how you feel and if he has changed his mind about you, I'm sure he'd feel confident in confessing any feelings he may have for you so don't talk to him about it again.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion