If he truly loves me in all my entirety and wants me back, be it in the near or distant future, he’ll start to try his best at showing me that I’ll be safe being with him. If he does decide to try and “woo me” again, I must have proof that he has changed for the better—“grown up,” as you said. I have to actually see the changes and the effort, actually feel his emotions as I once did, for a while before I can even consider returning to him. I’ll not accept pretending.
I cannot force him to change, however. I cannot even ask it of him. He must change when he is ready, if ever. If he does and can show me that, I’ll begin to consider another relationship with him. If he never does… then I am content with just being the best friend he knows loves him.