Yeah there's literally no additional advice that we could all give you besides-- Tell him. What you were knowing that you have to do anyway. Where do you start? Literally that you didn't go through with it. That's where you start.

But this is pretty heavy conversation you're about to drop on him. However he reacts initially, give him a little space to get his thoughts and feelings in order. You might not be able to have the full conversation All at once with a United decision right then