Immaturity is a funny word.. Are you thinking you can express simply love and get a response from him that way?

To say he never really understood you is a give on your match being of little concern for you to him in the beginning. That might sound bad because it is however it really shouldn't be considered going forward. You have to makeup ground where and as you cross it.

Further, importing chemical issues with the reconciliation is stupid and should not be part of your conversation as I'm sure they were there when you started also.

Why are you like that is because you have an idea that you could more easy start with a new or old version and live out your days with them. Do that or not but it sounds like you might communicate with him like you do here than you should not make it sound so tentative and pick the direction of restore.