Hi, Without proper communication it is difficult to know exactly what he wants. If he is not willing to talk about it then your options really would be to gve him an ultamatum if you wanted to go that route. You could also go with the flow and see where things go naturally with his actions. It would be up to you how long you would want to do that. You may want to try not contacting him first and see what steps he takes to get into contact with you. Sometimes people take forgranted what they have, so maybe by you doing this for a longer period of time than usual this may serve as his "wake up call" per say.
Please let me know if I can help further