I'm sure if you were to sift through those six years of details, we could probably get a better read on this situation. As for playing games to "make him want you back", that's stupid and childish. He either wants you, or he doesn't, and if he is switching between the two, he clearly doesn't know what he wants. And if he doesn't know what he wants, he can never be completely happy with you because you will never fit a mold that doesn't exist.
As for him fishing for details, you don't owe him anything. Don't play the shenanigans, and all that. If he wants to be with you, he does. Not the casual talk like you guys are friends or something. You aren't, so don't pretend. Tell him to leave you alone and give you some space because you are focusing on the wrong things. It's not "how to win him back", it's how to learn to live your life again without him in it. You are dependent on him, you don't need him for your happiness and he isn't the only one for you. If he doesn't want to be with you, which he showed with his actions of dumping you, let him stick to that decision. We all go through periods of doubt when we dump somebody. It's up to you to hold your ground and not let him use your feelings to his advantage of keeping you hung up on him.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.